Home / 12,825-19,239.03-3,939.17

Finding the Fourth Proportional to 12,825, 19,239.03 and 3,939.17

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Solution

The fourth proportional to 12,825, 19,239.03 and 3,939.17 is: 5,909.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,825 : 19,239.03 = 3,939.17 : x
  2. Step 2: Convert to fraction form
    12,825/19,239.03 = 3,939.17/x
  3. Step 3: Cross multiply
    12,825x = 19,239.03 × 3,939.17
  4. Step 4: Simplify right side
    12,825x = 75,785,713.61
  5. Step 5: Solve for x
    x = 75,785,713.61/12,825
  6. Step 6: Final answer
    x = 5,909.22

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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.