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Finding the Fourth Proportional to 11,985.66, 17,930.31 and 10,359.66

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Solution

The fourth proportional to 11,985.66, 17,930.31 and 10,359.66 is: 15,497.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.66 : 17,930.31 = 10,359.66 : x
  2. Step 2: Convert to fraction form
    11,985.66/17,930.31 = 10,359.66/x
  3. Step 3: Cross multiply
    11,985.66x = 17,930.31 × 10,359.66
  4. Step 4: Simplify right side
    11,985.66x = 185,751,915.29
  5. Step 5: Solve for x
    x = 185,751,915.29/11,985.66
  6. Step 6: Final answer
    x = 15,497.85

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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.