Home / 11,375.31-15,707.60-7,133.47

Finding the Fourth Proportional to 11,375.31, 15,707.60 and 7,133.47

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Solution

The fourth proportional to 11,375.31, 15,707.60 and 7,133.47 is: 9,850.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,375.31 : 15,707.60 = 7,133.47 : x
  2. Step 2: Convert to fraction form
    11,375.31/15,707.60 = 7,133.47/x
  3. Step 3: Cross multiply
    11,375.31x = 15,707.60 × 7,133.47
  4. Step 4: Simplify right side
    11,375.31x = 112,049,657.70
  5. Step 5: Solve for x
    x = 112,049,657.70/11,375.31
  6. Step 6: Final answer
    x = 9,850.26

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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.