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Finding the Fourth Proportional to 12,385.88, 17,079.48 and 9,553.71

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Solution

The fourth proportional to 12,385.88, 17,079.48 and 9,553.71 is: 13,174.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.88 : 17,079.48 = 9,553.71 : x
  2. Step 2: Convert to fraction form
    12,385.88/17,079.48 = 9,553.71/x
  3. Step 3: Cross multiply
    12,385.88x = 17,079.48 × 9,553.71
  4. Step 4: Simplify right side
    12,385.88x = 163,172,398.87
  5. Step 5: Solve for x
    x = 163,172,398.87/12,385.88
  6. Step 6: Final answer
    x = 13,174.07

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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.