Home / 10,079.88-15,121.38-5,146.85

Finding the Fourth Proportional to 10,079.88, 15,121.38 and 5,146.85

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Solution

The fourth proportional to 10,079.88, 15,121.38 and 5,146.85 is: 7,721.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,079.88 : 15,121.38 = 5,146.85 : x
  2. Step 2: Convert to fraction form
    10,079.88/15,121.38 = 5,146.85/x
  3. Step 3: Cross multiply
    10,079.88x = 15,121.38 × 5,146.85
  4. Step 4: Simplify right side
    10,079.88x = 77,827,399.05
  5. Step 5: Solve for x
    x = 77,827,399.05/10,079.88
  6. Step 6: Final answer
    x = 7,721.06

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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.