Home / 20,505,872.70-30,758,809.05-20,187,008.10

Finding the Fourth Proportional to 20,505,872.70, 30,758,809.05 and 20,187,008.10

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Solution

The fourth proportional to 20,505,872.70, 30,758,809.05 and 20,187,008.10 is: 30,280,512.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505,872.70 : 30,758,809.05 = 20,187,008.10 : x
  2. Step 2: Convert to fraction form
    20,505,872.70/30,758,809.05 = 20,187,008.10/x
  3. Step 3: Cross multiply
    20,505,872.70x = 30,758,809.05 × 20,187,008.10
  4. Step 4: Simplify right side
    20,505,872.70x = 620,928,327,438,703.38
  5. Step 5: Solve for x
    x = 620,928,327,438,703.38/20,505,872.70
  6. Step 6: Final answer
    x = 30,280,512.15

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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.