Home / 11,381.31-17,071.76-3,985.61

Finding the Fourth Proportional to 11,381.31, 17,071.76 and 3,985.61

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Solution

The fourth proportional to 11,381.31, 17,071.76 and 3,985.61 is: 5,978.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,381.31 : 17,071.76 = 3,985.61 : x
  2. Step 2: Convert to fraction form
    11,381.31/17,071.76 = 3,985.61/x
  3. Step 3: Cross multiply
    11,381.31x = 17,071.76 × 3,985.61
  4. Step 4: Simplify right side
    11,381.31x = 68,041,301.98
  5. Step 5: Solve for x
    x = 68,041,301.98/11,381.31
  6. Step 6: Final answer
    x = 5,978.34

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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.