Home / 21,451,419.20-32,177,128.80-20,456,091.20

Finding the Fourth Proportional to 21,451,419.20, 32,177,128.80 and 20,456,091.20

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Solution

The fourth proportional to 21,451,419.20, 32,177,128.80 and 20,456,091.20 is: 30,684,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451,419.20 : 32,177,128.80 = 20,456,091.20 : x
  2. Step 2: Convert to fraction form
    21,451,419.20/32,177,128.80 = 20,456,091.20/x
  3. Step 3: Cross multiply
    21,451,419.20x = 32,177,128.80 × 20,456,091.20
  4. Step 4: Simplify right side
    21,451,419.20x = 658,218,281,286,946.50
  5. Step 5: Solve for x
    x = 658,218,281,286,946.50/21,451,419.20
  6. Step 6: Final answer
    x = 30,684,136.80

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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.