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Finding the Fourth Proportional to 34,636.76, 47,798.96 and 18,721.20

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Solution

The fourth proportional to 34,636.76, 47,798.96 and 18,721.20 is: 25,835.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,636.76 : 47,798.96 = 18,721.20 : x
  2. Step 2: Convert to fraction form
    34,636.76/47,798.96 = 18,721.20/x
  3. Step 3: Cross multiply
    34,636.76x = 47,798.96 × 18,721.20
  4. Step 4: Simplify right side
    34,636.76x = 894,853,889.95
  5. Step 5: Solve for x
    x = 894,853,889.95/34,636.76
  6. Step 6: Final answer
    x = 25,835.38

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Find fourth proportional to 17,318.38, 23,899.48 and 9,360.60
Half scale
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Double scale
Find fourth proportional to 34,637.76, 47,800.34 and 18,722.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.