Home / 11,721.80-17,586.14-6,531.40

Finding the Fourth Proportional to 11,721.80, 17,586.14 and 6,531.40

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Solution

The fourth proportional to 11,721.80, 17,586.14 and 6,531.40 is: 9,799.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.80 : 17,586.14 = 6,531.40 : x
  2. Step 2: Convert to fraction form
    11,721.80/17,586.14 = 6,531.40/x
  3. Step 3: Cross multiply
    11,721.80x = 17,586.14 × 6,531.40
  4. Step 4: Simplify right side
    11,721.80x = 114,862,114.80
  5. Step 5: Solve for x
    x = 114,862,114.80/11,721.80
  6. Step 6: Final answer
    x = 9,799.02

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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.