Home / 9,921.35-13,691.03-5,445.18

Finding the Fourth Proportional to 9,921.35, 13,691.03 and 5,445.18

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Solution

The fourth proportional to 9,921.35, 13,691.03 and 5,445.18 is: 7,514.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.35 : 13,691.03 = 5,445.18 : x
  2. Step 2: Convert to fraction form
    9,921.35/13,691.03 = 5,445.18/x
  3. Step 3: Cross multiply
    9,921.35x = 13,691.03 × 5,445.18
  4. Step 4: Simplify right side
    9,921.35x = 74,550,102.12
  5. Step 5: Solve for x
    x = 74,550,102.12/9,921.35
  6. Step 6: Final answer
    x = 7,514.11

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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.