Home / 9,921.32-13,691.20-5,445.04

Finding the Fourth Proportional to 9,921.32, 13,691.20 and 5,445.04

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Solution

The fourth proportional to 9,921.32, 13,691.20 and 5,445.04 is: 7,514.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.32 : 13,691.20 = 5,445.04 : x
  2. Step 2: Convert to fraction form
    9,921.32/13,691.20 = 5,445.04/x
  3. Step 3: Cross multiply
    9,921.32x = 13,691.20 × 5,445.04
  4. Step 4: Simplify right side
    9,921.32x = 74,549,131.65
  5. Step 5: Solve for x
    x = 74,549,131.65/9,921.32
  6. Step 6: Final answer
    x = 7,514.03

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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.