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Finding the Fourth Proportional to 16,988.43, 23,445.51 and 9,917.13

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Solution

The fourth proportional to 16,988.43, 23,445.51 and 9,917.13 is: 13,686.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,988.43 : 23,445.51 = 9,917.13 : x
  2. Step 2: Convert to fraction form
    16,988.43/23,445.51 = 9,917.13/x
  3. Step 3: Cross multiply
    16,988.43x = 23,445.51 × 9,917.13
  4. Step 4: Simplify right side
    16,988.43x = 232,512,170.59
  5. Step 5: Solve for x
    x = 232,512,170.59/16,988.43
  6. Step 6: Final answer
    x = 13,686.50

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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.