Home / 12,555.38-17,338.14-8,086.92

Finding the Fourth Proportional to 12,555.38, 17,338.14 and 8,086.92

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Solution

The fourth proportional to 12,555.38, 17,338.14 and 8,086.92 is: 11,167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.38 : 17,338.14 = 8,086.92 : x
  2. Step 2: Convert to fraction form
    12,555.38/17,338.14 = 8,086.92/x
  3. Step 3: Cross multiply
    12,555.38x = 17,338.14 × 8,086.92
  4. Step 4: Simplify right side
    12,555.38x = 140,212,151.13
  5. Step 5: Solve for x
    x = 140,212,151.13/12,555.38
  6. Step 6: Final answer
    x = 11,167.50

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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.