Home / 30,686.06-42,344.34-17,254.76

Finding the Fourth Proportional to 30,686.06, 42,344.34 and 17,254.76

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Solution

The fourth proportional to 30,686.06, 42,344.34 and 17,254.76 is: 23,810.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,686.06 : 42,344.34 = 17,254.76 : x
  2. Step 2: Convert to fraction form
    30,686.06/42,344.34 = 17,254.76/x
  3. Step 3: Cross multiply
    30,686.06x = 42,344.34 × 17,254.76
  4. Step 4: Simplify right side
    30,686.06x = 730,641,424.06
  5. Step 5: Solve for x
    x = 730,641,424.06/30,686.06
  6. Step 6: Final answer
    x = 23,810.21

Related Problems

Find fourth proportional to 15,343.03, 21,172.17 and 8,627.38
Half scale
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Double scale
Find fourth proportional to 30,687.06, 42,345.72 and 17,255.76
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.