Home / 20,156.60-30,267.30-15,231.80

Finding the Fourth Proportional to 20,156.60, 30,267.30 and 15,231.80

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Solution

The fourth proportional to 20,156.60, 30,267.30 and 15,231.80 is: 22,872.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.60 : 30,267.30 = 15,231.80 : x
  2. Step 2: Convert to fraction form
    20,156.60/30,267.30 = 15,231.80/x
  3. Step 3: Cross multiply
    20,156.60x = 30,267.30 × 15,231.80
  4. Step 4: Simplify right side
    20,156.60x = 461,025,460.14
  5. Step 5: Solve for x
    x = 461,025,460.14/20,156.60
  6. Step 6: Final answer
    x = 22,872.18

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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.