Home / 28,263.38-39,003.95-15,517.76

Finding the Fourth Proportional to 28,263.38, 39,003.95 and 15,517.76

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Solution

The fourth proportional to 28,263.38, 39,003.95 and 15,517.76 is: 21,414.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,263.38 : 39,003.95 = 15,517.76 : x
  2. Step 2: Convert to fraction form
    28,263.38/39,003.95 = 15,517.76/x
  3. Step 3: Cross multiply
    28,263.38x = 39,003.95 × 15,517.76
  4. Step 4: Simplify right side
    28,263.38x = 605,253,778.93
  5. Step 5: Solve for x
    x = 605,253,778.93/28,263.38
  6. Step 6: Final answer
    x = 21,414.77

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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.