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Finding the Fourth Proportional to 11,870, 16,380.33 and 6,564.86

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Solution

The fourth proportional to 11,870, 16,380.33 and 6,564.86 is: 9,059.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,870 : 16,380.33 = 6,564.86 : x
  2. Step 2: Convert to fraction form
    11,870/16,380.33 = 6,564.86/x
  3. Step 3: Cross multiply
    11,870x = 16,380.33 × 6,564.86
  4. Step 4: Simplify right side
    11,870x = 107,534,573.20
  5. Step 5: Solve for x
    x = 107,534,573.20/11,870
  6. Step 6: Final answer
    x = 9,059.36

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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.