Home / 19,540.38-29,309.34-8,439.28

Finding the Fourth Proportional to 19,540.38, 29,309.34 and 8,439.28

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Solution

The fourth proportional to 19,540.38, 29,309.34 and 8,439.28 is: 12,658.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,540.38 : 29,309.34 = 8,439.28 : x
  2. Step 2: Convert to fraction form
    19,540.38/29,309.34 = 8,439.28/x
  3. Step 3: Cross multiply
    19,540.38x = 29,309.34 × 8,439.28
  4. Step 4: Simplify right side
    19,540.38x = 247,349,726.88
  5. Step 5: Solve for x
    x = 247,349,726.88/19,540.38
  6. Step 6: Final answer
    x = 12,658.39

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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.