Home / 9,921.31-13,691.67-5,445.22

Finding the Fourth Proportional to 9,921.31, 13,691.67 and 5,445.22

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Solution

The fourth proportional to 9,921.31, 13,691.67 and 5,445.22 is: 7,514.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.31 : 13,691.67 = 5,445.22 : x
  2. Step 2: Convert to fraction form
    9,921.31/13,691.67 = 5,445.22/x
  3. Step 3: Cross multiply
    9,921.31x = 13,691.67 × 5,445.22
  4. Step 4: Simplify right side
    9,921.31x = 74,554,121.09
  5. Step 5: Solve for x
    x = 74,554,121.09/9,921.31
  6. Step 6: Final answer
    x = 7,514.55

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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.