Home / 21,124.38-29,154.18-13,567.92

Finding the Fourth Proportional to 21,124.38, 29,154.18 and 13,567.92

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Solution

The fourth proportional to 21,124.38, 29,154.18 and 13,567.92 is: 18,725.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.38 : 29,154.18 = 13,567.92 : x
  2. Step 2: Convert to fraction form
    21,124.38/29,154.18 = 13,567.92/x
  3. Step 3: Cross multiply
    21,124.38x = 29,154.18 × 13,567.92
  4. Step 4: Simplify right side
    21,124.38x = 395,561,581.91
  5. Step 5: Solve for x
    x = 395,561,581.91/21,124.38
  6. Step 6: Final answer
    x = 18,725.36

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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.