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Finding the Fourth Proportional to 12,850.25, 17,731.71 and 7,543.13

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Solution

The fourth proportional to 12,850.25, 17,731.71 and 7,543.13 is: 10,408.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,850.25 : 17,731.71 = 7,543.13 : x
  2. Step 2: Convert to fraction form
    12,850.25/17,731.71 = 7,543.13/x
  3. Step 3: Cross multiply
    12,850.25x = 17,731.71 × 7,543.13
  4. Step 4: Simplify right side
    12,850.25x = 133,752,504.99
  5. Step 5: Solve for x
    x = 133,752,504.99/12,850.25
  6. Step 6: Final answer
    x = 10,408.56

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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.