Home / 20,195.20-30,292.80-15,816.40

Finding the Fourth Proportional to 20,195.20, 30,292.80 and 15,816.40

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Solution

The fourth proportional to 20,195.20, 30,292.80 and 15,816.40 is: 23,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.20 : 30,292.80 = 15,816.40 : x
  2. Step 2: Convert to fraction form
    20,195.20/30,292.80 = 15,816.40/x
  3. Step 3: Cross multiply
    20,195.20x = 30,292.80 × 15,816.40
  4. Step 4: Simplify right side
    20,195.20x = 479,123,041.92
  5. Step 5: Solve for x
    x = 479,123,041.92/20,195.20
  6. Step 6: Final answer
    x = 23,724.60

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Similar ratio
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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.