Home / 19,781.30-29,649.15-9,927.38

Finding the Fourth Proportional to 19,781.30, 29,649.15 and 9,927.38

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Solution

The fourth proportional to 19,781.30, 29,649.15 and 9,927.38 is: 14,879.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,781.30 : 29,649.15 = 9,927.38 : x
  2. Step 2: Convert to fraction form
    19,781.30/29,649.15 = 9,927.38/x
  3. Step 3: Cross multiply
    19,781.30x = 29,649.15 × 9,927.38
  4. Step 4: Simplify right side
    19,781.30x = 294,338,378.73
  5. Step 5: Solve for x
    x = 294,338,378.73/19,781.30
  6. Step 6: Final answer
    x = 14,879.63

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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.