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Finding the Fourth Proportional to 28,141.92, 38,833.92 and 15,567.12

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Solution

The fourth proportional to 28,141.92, 38,833.92 and 15,567.12 is: 21,481.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,141.92 : 38,833.92 = 15,567.12 : x
  2. Step 2: Convert to fraction form
    28,141.92/38,833.92 = 15,567.12/x
  3. Step 3: Cross multiply
    28,141.92x = 38,833.92 × 15,567.12
  4. Step 4: Simplify right side
    28,141.92x = 604,532,292.71
  5. Step 5: Solve for x
    x = 604,532,292.71/28,141.92
  6. Step 6: Final answer
    x = 21,481.56

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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.