Home / 21,221.88-29,295.17-14,324.54

Finding the Fourth Proportional to 21,221.88, 29,295.17 and 14,324.54

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Solution

The fourth proportional to 21,221.88, 29,295.17 and 14,324.54 is: 19,773.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,221.88 : 29,295.17 = 14,324.54 : x
  2. Step 2: Convert to fraction form
    21,221.88/29,295.17 = 14,324.54/x
  3. Step 3: Cross multiply
    21,221.88x = 29,295.17 × 14,324.54
  4. Step 4: Simplify right side
    21,221.88x = 419,639,752.48
  5. Step 5: Solve for x
    x = 419,639,752.48/21,221.88
  6. Step 6: Final answer
    x = 19,773.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.