Home / 11,375.90-15,708.44-7,134.10

Finding the Fourth Proportional to 11,375.90, 15,708.44 and 7,134.10

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Solution

The fourth proportional to 11,375.90, 15,708.44 and 7,134.10 is: 9,851.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,375.90 : 15,708.44 = 7,134.10 : x
  2. Step 2: Convert to fraction form
    11,375.90/15,708.44 = 7,134.10/x
  3. Step 3: Cross multiply
    11,375.90x = 15,708.44 × 7,134.10
  4. Step 4: Simplify right side
    11,375.90x = 112,065,581.80
  5. Step 5: Solve for x
    x = 112,065,581.80/11,375.90
  6. Step 6: Final answer
    x = 9,851.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.