Home / 10,082.68-15,127.09-5,155.78

Finding the Fourth Proportional to 10,082.68, 15,127.09 and 5,155.78

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Solution

The fourth proportional to 10,082.68, 15,127.09 and 5,155.78 is: 7,735.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,082.68 : 15,127.09 = 5,155.78 : x
  2. Step 2: Convert to fraction form
    10,082.68/15,127.09 = 5,155.78/x
  3. Step 3: Cross multiply
    10,082.68x = 15,127.09 × 5,155.78
  4. Step 4: Simplify right side
    10,082.68x = 77,991,923.15
  5. Step 5: Solve for x
    x = 77,991,923.15/10,082.68
  6. Step 6: Final answer
    x = 7,735.24

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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.