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Finding the Fourth Proportional to 16,439.13, 22,685.94 and 8,987.13

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Solution

The fourth proportional to 16,439.13, 22,685.94 and 8,987.13 is: 12,402.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,439.13 : 22,685.94 = 8,987.13 : x
  2. Step 2: Convert to fraction form
    16,439.13/22,685.94 = 8,987.13/x
  3. Step 3: Cross multiply
    16,439.13x = 22,685.94 × 8,987.13
  4. Step 4: Simplify right side
    16,439.13x = 203,881,491.95
  5. Step 5: Solve for x
    x = 203,881,491.95/16,439.13
  6. Step 6: Final answer
    x = 12,402.21

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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.