Home / 10,399.14-15,605.04-5,472.30

Finding the Fourth Proportional to 10,399.14, 15,605.04 and 5,472.30

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Solution

The fourth proportional to 10,399.14, 15,605.04 and 5,472.30 is: 8,211.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,399.14 : 15,605.04 = 5,472.30 : x
  2. Step 2: Convert to fraction form
    10,399.14/15,605.04 = 5,472.30/x
  3. Step 3: Cross multiply
    10,399.14x = 15,605.04 × 5,472.30
  4. Step 4: Simplify right side
    10,399.14x = 85,395,460.39
  5. Step 5: Solve for x
    x = 85,395,460.39/10,399.14
  6. Step 6: Final answer
    x = 8,211.78

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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.