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Finding the Fourth Proportional to 16,487.88, 22,752.78 and 9,412.92

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Solution

The fourth proportional to 16,487.88, 22,752.78 and 9,412.92 is: 12,989.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,487.88 : 22,752.78 = 9,412.92 : x
  2. Step 2: Convert to fraction form
    16,487.88/22,752.78 = 9,412.92/x
  3. Step 3: Cross multiply
    16,487.88x = 22,752.78 × 9,412.92
  4. Step 4: Simplify right side
    16,487.88x = 214,170,097.92
  5. Step 5: Solve for x
    x = 214,170,097.92/16,487.88
  6. Step 6: Final answer
    x = 12,989.55

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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.