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Finding the Fourth Proportional to 17,918.43, 24,721.65 and 9,959.12

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Solution

The fourth proportional to 17,918.43, 24,721.65 and 9,959.12 is: 13,740.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,918.43 : 24,721.65 = 9,959.12 : x
  2. Step 2: Convert to fraction form
    17,918.43/24,721.65 = 9,959.12/x
  3. Step 3: Cross multiply
    17,918.43x = 24,721.65 × 9,959.12
  4. Step 4: Simplify right side
    17,918.43x = 246,205,885.39
  5. Step 5: Solve for x
    x = 246,205,885.39/17,918.43
  6. Step 6: Final answer
    x = 13,740.37

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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.