Home / 38,517.80-57,792.90-21,000.20

Finding the Fourth Proportional to 38,517.80, 57,792.90 and 21,000.20

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Solution

The fourth proportional to 38,517.80, 57,792.90 and 21,000.20 is: 31,509.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,517.80 : 57,792.90 = 21,000.20 : x
  2. Step 2: Convert to fraction form
    38,517.80/57,792.90 = 21,000.20/x
  3. Step 3: Cross multiply
    38,517.80x = 57,792.90 × 21,000.20
  4. Step 4: Simplify right side
    38,517.80x = 1,213,662,458.58
  5. Step 5: Solve for x
    x = 1,213,662,458.58/38,517.80
  6. Step 6: Final answer
    x = 31,509.13

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1.5x scale

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.