Home / 39,917.28-55,085.20-22,921.88

Finding the Fourth Proportional to 39,917.28, 55,085.20 and 22,921.88

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Solution

The fourth proportional to 39,917.28, 55,085.20 and 22,921.88 is: 31,631.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,917.28 : 55,085.20 = 22,921.88 : x
  2. Step 2: Convert to fraction form
    39,917.28/55,085.20 = 22,921.88/x
  3. Step 3: Cross multiply
    39,917.28x = 55,085.20 × 22,921.88
  4. Step 4: Simplify right side
    39,917.28x = 1,262,656,344.18
  5. Step 5: Solve for x
    x = 1,262,656,344.18/39,917.28
  6. Step 6: Final answer
    x = 31,631.82

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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.