Home / 21,627.92-29,841.43-13,129.84

Finding the Fourth Proportional to 21,627.92, 29,841.43 and 13,129.84

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Solution

The fourth proportional to 21,627.92, 29,841.43 and 13,129.84 is: 18,116.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,627.92 : 29,841.43 = 13,129.84 : x
  2. Step 2: Convert to fraction form
    21,627.92/29,841.43 = 13,129.84/x
  3. Step 3: Cross multiply
    21,627.92x = 29,841.43 × 13,129.84
  4. Step 4: Simplify right side
    21,627.92x = 391,813,201.27
  5. Step 5: Solve for x
    x = 391,813,201.27/21,627.92
  6. Step 6: Final answer
    x = 18,116.08

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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.