Home / 21,255.76-31,887.96-7,414.48

Finding the Fourth Proportional to 21,255.76, 31,887.96 and 7,414.48

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Solution

The fourth proportional to 21,255.76, 31,887.96 and 7,414.48 is: 11,123.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.76 : 31,887.96 = 7,414.48 : x
  2. Step 2: Convert to fraction form
    21,255.76/31,887.96 = 7,414.48/x
  3. Step 3: Cross multiply
    21,255.76x = 31,887.96 × 7,414.48
  4. Step 4: Simplify right side
    21,255.76x = 236,432,641.66
  5. Step 5: Solve for x
    x = 236,432,641.66/21,255.76
  6. Step 6: Final answer
    x = 11,123.23

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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.