Home / 11,691.52-16,134.21-6,386.34

Finding the Fourth Proportional to 11,691.52, 16,134.21 and 6,386.34

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Solution

The fourth proportional to 11,691.52, 16,134.21 and 6,386.34 is: 8,813.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.52 : 16,134.21 = 6,386.34 : x
  2. Step 2: Convert to fraction form
    11,691.52/16,134.21 = 6,386.34/x
  3. Step 3: Cross multiply
    11,691.52x = 16,134.21 × 6,386.34
  4. Step 4: Simplify right side
    11,691.52x = 103,038,470.02
  5. Step 5: Solve for x
    x = 103,038,470.02/11,691.52
  6. Step 6: Final answer
    x = 8,813.09

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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.