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Finding the Fourth Proportional to 16,218.38, 22,387.43 and 12,626.22

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Solution

The fourth proportional to 16,218.38, 22,387.43 and 12,626.22 is: 17,428.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,218.38 : 22,387.43 = 12,626.22 : x
  2. Step 2: Convert to fraction form
    16,218.38/22,387.43 = 12,626.22/x
  3. Step 3: Cross multiply
    16,218.38x = 22,387.43 × 12,626.22
  4. Step 4: Simplify right side
    16,218.38x = 282,668,616.41
  5. Step 5: Solve for x
    x = 282,668,616.41/16,218.38
  6. Step 6: Final answer
    x = 17,428.91

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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.