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Finding the Fourth Proportional to 16,955, 23,397.90 and 10,331

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Solution

The fourth proportional to 16,955, 23,397.90 and 10,331 is: 14,256.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,955 : 23,397.90 = 10,331 : x
  2. Step 2: Convert to fraction form
    16,955/23,397.90 = 10,331/x
  3. Step 3: Cross multiply
    16,955x = 23,397.90 × 10,331
  4. Step 4: Simplify right side
    16,955x = 241,723,704.90
  5. Step 5: Solve for x
    x = 241,723,704.90/16,955
  6. Step 6: Final answer
    x = 14,256.78

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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.