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Finding the Fourth Proportional to 11,663.38, 17,479.41 and 6,390.46

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Solution

The fourth proportional to 11,663.38, 17,479.41 and 6,390.46 is: 9,577.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,663.38 : 17,479.41 = 6,390.46 : x
  2. Step 2: Convert to fraction form
    11,663.38/17,479.41 = 6,390.46/x
  3. Step 3: Cross multiply
    11,663.38x = 17,479.41 × 6,390.46
  4. Step 4: Simplify right side
    11,663.38x = 111,701,470.43
  5. Step 5: Solve for x
    x = 111,701,470.43/11,663.38
  6. Step 6: Final answer
    x = 9,577.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.