Home / 12,475.48-17,186.91-8,691.80

Finding the Fourth Proportional to 12,475.48, 17,186.91 and 8,691.80

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Solution

The fourth proportional to 12,475.48, 17,186.91 and 8,691.80 is: 11,974.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.48 : 17,186.91 = 8,691.80 : x
  2. Step 2: Convert to fraction form
    12,475.48/17,186.91 = 8,691.80/x
  3. Step 3: Cross multiply
    12,475.48x = 17,186.91 × 8,691.80
  4. Step 4: Simplify right side
    12,475.48x = 149,385,098.40
  5. Step 5: Solve for x
    x = 149,385,098.40/12,475.48
  6. Step 6: Final answer
    x = 11,974.30

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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.