Home / 38,480.10-57,720.15-21,891.30

Finding the Fourth Proportional to 38,480.10, 57,720.15 and 21,891.30

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Solution

The fourth proportional to 38,480.10, 57,720.15 and 21,891.30 is: 32,836.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,480.10 : 57,720.15 = 21,891.30 : x
  2. Step 2: Convert to fraction form
    38,480.10/57,720.15 = 21,891.30/x
  3. Step 3: Cross multiply
    38,480.10x = 57,720.15 × 21,891.30
  4. Step 4: Simplify right side
    38,480.10x = 1,263,569,119.70
  5. Step 5: Solve for x
    x = 1,263,569,119.70/38,480.10
  6. Step 6: Final answer
    x = 32,836.95

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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.