Home / 20,608,148.21-30,912,328.90-12,082,505.97

Finding the Fourth Proportional to 20,608,148.21, 30,912,328.90 and 12,082,505.97

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Solution

The fourth proportional to 20,608,148.21, 30,912,328.90 and 12,082,505.97 is: 18,123,821.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,608,148.21 : 30,912,328.90 = 12,082,505.97 : x
  2. Step 2: Convert to fraction form
    20,608,148.21/30,912,328.90 = 12,082,505.97/x
  3. Step 3: Cross multiply
    20,608,148.21x = 30,912,328.90 × 12,082,505.97
  4. Step 4: Simplify right side
    20,608,148.21x = 373,498,398,480,853.56
  5. Step 5: Solve for x
    x = 373,498,398,480,853.56/20,608,148.21
  6. Step 6: Final answer
    x = 18,123,821.45

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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.