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Finding the Fourth Proportional to 17,957.27, 24,780.81 and 9,890.78

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Solution

The fourth proportional to 17,957.27, 24,780.81 and 9,890.78 is: 13,649.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,957.27 : 24,780.81 = 9,890.78 : x
  2. Step 2: Convert to fraction form
    17,957.27/24,780.81 = 9,890.78/x
  3. Step 3: Cross multiply
    17,957.27x = 24,780.81 × 9,890.78
  4. Step 4: Simplify right side
    17,957.27x = 245,101,539.93
  5. Step 5: Solve for x
    x = 245,101,539.93/17,957.27
  6. Step 6: Final answer
    x = 13,649.15

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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.