Home / 13,921.62-20,869.11-5,154.18

Finding the Fourth Proportional to 13,921.62, 20,869.11 and 5,154.18

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Solution

The fourth proportional to 13,921.62, 20,869.11 and 5,154.18 is: 7,726.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.62 : 20,869.11 = 5,154.18 : x
  2. Step 2: Convert to fraction form
    13,921.62/20,869.11 = 5,154.18/x
  3. Step 3: Cross multiply
    13,921.62x = 20,869.11 × 5,154.18
  4. Step 4: Simplify right side
    13,921.62x = 107,563,149.38
  5. Step 5: Solve for x
    x = 107,563,149.38/13,921.62
  6. Step 6: Final answer
    x = 7,726.34

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1.5x scale

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.