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Finding the Fourth Proportional to 18,988.76, 26,204.90 and 10,605.24

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Solution

The fourth proportional to 18,988.76, 26,204.90 and 10,605.24 is: 14,635.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.76 : 26,204.90 = 10,605.24 : x
  2. Step 2: Convert to fraction form
    18,988.76/26,204.90 = 10,605.24/x
  3. Step 3: Cross multiply
    18,988.76x = 26,204.90 × 10,605.24
  4. Step 4: Simplify right side
    18,988.76x = 277,909,253.68
  5. Step 5: Solve for x
    x = 277,909,253.68/18,988.76
  6. Step 6: Final answer
    x = 14,635.46

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Find fourth proportional to 9,494.38, 13,102.45 and 5,302.62
Half scale
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Double scale
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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.