Home / 20,381.20-30,549.35-15,367.50

Finding the Fourth Proportional to 20,381.20, 30,549.35 and 15,367.50

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Solution

The fourth proportional to 20,381.20, 30,549.35 and 15,367.50 is: 23,034.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,381.20 : 30,549.35 = 15,367.50 : x
  2. Step 2: Convert to fraction form
    20,381.20/30,549.35 = 15,367.50/x
  3. Step 3: Cross multiply
    20,381.20x = 30,549.35 × 15,367.50
  4. Step 4: Simplify right side
    20,381.20x = 469,467,136.13
  5. Step 5: Solve for x
    x = 469,467,136.13/20,381.20
  6. Step 6: Final answer
    x = 23,034.33

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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.