Home / 11,691.48-16,134.04-6,386.16

Finding the Fourth Proportional to 11,691.48, 16,134.04 and 6,386.16

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Solution

The fourth proportional to 11,691.48, 16,134.04 and 6,386.16 is: 8,812.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.48 : 16,134.04 = 6,386.16 : x
  2. Step 2: Convert to fraction form
    11,691.48/16,134.04 = 6,386.16/x
  3. Step 3: Cross multiply
    11,691.48x = 16,134.04 × 6,386.16
  4. Step 4: Simplify right side
    11,691.48x = 103,034,560.89
  5. Step 5: Solve for x
    x = 103,034,560.89/11,691.48
  6. Step 6: Final answer
    x = 8,812.79

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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.