Home / 9,691.38-13,374.18-5,499.36

Finding the Fourth Proportional to 9,691.38, 13,374.18 and 5,499.36

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Solution

The fourth proportional to 9,691.38, 13,374.18 and 5,499.36 is: 7,589.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,691.38 : 13,374.18 = 5,499.36 : x
  2. Step 2: Convert to fraction form
    9,691.38/13,374.18 = 5,499.36/x
  3. Step 3: Cross multiply
    9,691.38x = 13,374.18 × 5,499.36
  4. Step 4: Simplify right side
    9,691.38x = 73,549,430.52
  5. Step 5: Solve for x
    x = 73,549,430.52/9,691.38
  6. Step 6: Final answer
    x = 7,589.16

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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.