Home / 13,868.64-20,801.68-5,660

Finding the Fourth Proportional to 13,868.64, 20,801.68 and 5,660

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Solution

The fourth proportional to 13,868.64, 20,801.68 and 5,660 is: 8,489.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.64 : 20,801.68 = 5,660 : x
  2. Step 2: Convert to fraction form
    13,868.64/20,801.68 = 5,660/x
  3. Step 3: Cross multiply
    13,868.64x = 20,801.68 × 5,660
  4. Step 4: Simplify right side
    13,868.64x = 117,737,508.80
  5. Step 5: Solve for x
    x = 117,737,508.80/13,868.64
  6. Step 6: Final answer
    x = 8,489.48

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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.