Home / 13,687.83-20,519.87-6,658.04

Finding the Fourth Proportional to 13,687.83, 20,519.87 and 6,658.04

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Solution

The fourth proportional to 13,687.83, 20,519.87 and 6,658.04 is: 9,981.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.83 : 20,519.87 = 6,658.04 : x
  2. Step 2: Convert to fraction form
    13,687.83/20,519.87 = 6,658.04/x
  3. Step 3: Cross multiply
    13,687.83x = 20,519.87 × 6,658.04
  4. Step 4: Simplify right side
    13,687.83x = 136,622,133.26
  5. Step 5: Solve for x
    x = 136,622,133.26/13,687.83
  6. Step 6: Final answer
    x = 9,981.29

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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.