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Finding the Fourth Proportional to 28,141.92, 38,834.24 and 15,565.92

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Solution

The fourth proportional to 28,141.92, 38,834.24 and 15,565.92 is: 21,480.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,141.92 : 38,834.24 = 15,565.92 : x
  2. Step 2: Convert to fraction form
    28,141.92/38,834.24 = 15,565.92/x
  3. Step 3: Cross multiply
    28,141.92x = 38,834.24 × 15,565.92
  4. Step 4: Simplify right side
    28,141.92x = 604,490,673.10
  5. Step 5: Solve for x
    x = 604,490,673.10/28,141.92
  6. Step 6: Final answer
    x = 21,480.08

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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.