Home / 20,654.08-28,502.22-11,222.71

Finding the Fourth Proportional to 20,654.08, 28,502.22 and 11,222.71

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Solution

The fourth proportional to 20,654.08, 28,502.22 and 11,222.71 is: 15,487.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.08 : 28,502.22 = 11,222.71 : x
  2. Step 2: Convert to fraction form
    20,654.08/28,502.22 = 11,222.71/x
  3. Step 3: Cross multiply
    20,654.08x = 28,502.22 × 11,222.71
  4. Step 4: Simplify right side
    20,654.08x = 319,872,149.42
  5. Step 5: Solve for x
    x = 319,872,149.42/20,654.08
  6. Step 6: Final answer
    x = 15,487.12

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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.