Home / 11,691.38-16,133.88-6,386.24

Finding the Fourth Proportional to 11,691.38, 16,133.88 and 6,386.24

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Solution

The fourth proportional to 11,691.38, 16,133.88 and 6,386.24 is: 8,812.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.38 : 16,133.88 = 6,386.24 : x
  2. Step 2: Convert to fraction form
    11,691.38/16,133.88 = 6,386.24/x
  3. Step 3: Cross multiply
    11,691.38x = 16,133.88 × 6,386.24
  4. Step 4: Simplify right side
    11,691.38x = 103,034,829.81
  5. Step 5: Solve for x
    x = 103,034,829.81/11,691.38
  6. Step 6: Final answer
    x = 8,812.89

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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.