Home / 10,478.55-15,715.38-3,081.03

Finding the Fourth Proportional to 10,478.55, 15,715.38 and 3,081.03

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Solution

The fourth proportional to 10,478.55, 15,715.38 and 3,081.03 is: 4,620.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.55 : 15,715.38 = 3,081.03 : x
  2. Step 2: Convert to fraction form
    10,478.55/15,715.38 = 3,081.03/x
  3. Step 3: Cross multiply
    10,478.55x = 15,715.38 × 3,081.03
  4. Step 4: Simplify right side
    10,478.55x = 48,419,557.24
  5. Step 5: Solve for x
    x = 48,419,557.24/10,478.55
  6. Step 6: Final answer
    x = 4,620.83

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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.