Home / 11,486.31-17,218.53-3,689.66

Finding the Fourth Proportional to 11,486.31, 17,218.53 and 3,689.66

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Solution

The fourth proportional to 11,486.31, 17,218.53 and 3,689.66 is: 5,530.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,486.31 : 17,218.53 = 3,689.66 : x
  2. Step 2: Convert to fraction form
    11,486.31/17,218.53 = 3,689.66/x
  3. Step 3: Cross multiply
    11,486.31x = 17,218.53 × 3,689.66
  4. Step 4: Simplify right side
    11,486.31x = 63,530,521.40
  5. Step 5: Solve for x
    x = 63,530,521.40/11,486.31
  6. Step 6: Final answer
    x = 5,530.98

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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.