Home / 18,705.38-28,062.68-5,557.72

Finding the Fourth Proportional to 18,705.38, 28,062.68 and 5,557.72

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Solution

The fourth proportional to 18,705.38, 28,062.68 and 5,557.72 is: 8,337.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.38 : 28,062.68 = 5,557.72 : x
  2. Step 2: Convert to fraction form
    18,705.38/28,062.68 = 5,557.72/x
  3. Step 3: Cross multiply
    18,705.38x = 28,062.68 × 5,557.72
  4. Step 4: Simplify right side
    18,705.38x = 155,964,517.89
  5. Step 5: Solve for x
    x = 155,964,517.89/18,705.38
  6. Step 6: Final answer
    x = 8,337.95

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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.