Home / 28,517.76-39,353.52-15,942.48

Finding the Fourth Proportional to 28,517.76, 39,353.52 and 15,942.48

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Solution

The fourth proportional to 28,517.76, 39,353.52 and 15,942.48 is: 22,000.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.76 : 39,353.52 = 15,942.48 : x
  2. Step 2: Convert to fraction form
    28,517.76/39,353.52 = 15,942.48/x
  3. Step 3: Cross multiply
    28,517.76x = 39,353.52 × 15,942.48
  4. Step 4: Simplify right side
    28,517.76x = 627,392,705.53
  5. Step 5: Solve for x
    x = 627,392,705.53/28,517.76
  6. Step 6: Final answer
    x = 22,000.07

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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.