Home / 12,882.38-19,331.80-5,486.87

Finding the Fourth Proportional to 12,882.38, 19,331.80 and 5,486.87

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Solution

The fourth proportional to 12,882.38, 19,331.80 and 5,486.87 is: 8,233.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882.38 : 19,331.80 = 5,486.87 : x
  2. Step 2: Convert to fraction form
    12,882.38/19,331.80 = 5,486.87/x
  3. Step 3: Cross multiply
    12,882.38x = 19,331.80 × 5,486.87
  4. Step 4: Simplify right side
    12,882.38x = 106,071,108.08
  5. Step 5: Solve for x
    x = 106,071,108.08/12,882.38
  6. Step 6: Final answer
    x = 8,233.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.