Home / 11,720.31-17,566.97-6,515.79

Finding the Fourth Proportional to 11,720.31, 17,566.97 and 6,515.79

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Solution

The fourth proportional to 11,720.31, 17,566.97 and 6,515.79 is: 9,766.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.31 : 17,566.97 = 6,515.79 : x
  2. Step 2: Convert to fraction form
    11,720.31/17,566.97 = 6,515.79/x
  3. Step 3: Cross multiply
    11,720.31x = 17,566.97 × 6,515.79
  4. Step 4: Simplify right side
    11,720.31x = 114,462,654.88
  5. Step 5: Solve for x
    x = 114,462,654.88/11,720.31
  6. Step 6: Final answer
    x = 9,766.18

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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.