Home / 13,815.38-20,724.60-4,932.78

Finding the Fourth Proportional to 13,815.38, 20,724.60 and 4,932.78

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Solution

The fourth proportional to 13,815.38, 20,724.60 and 4,932.78 is: 7,399.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.38 : 20,724.60 = 4,932.78 : x
  2. Step 2: Convert to fraction form
    13,815.38/20,724.60 = 4,932.78/x
  3. Step 3: Cross multiply
    13,815.38x = 20,724.60 × 4,932.78
  4. Step 4: Simplify right side
    13,815.38x = 102,229,892.39
  5. Step 5: Solve for x
    x = 102,229,892.39/13,815.38
  6. Step 6: Final answer
    x = 7,399.72

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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.