Home / 20,269,729.20-30,404,593.80-5,123,660.70

Finding the Fourth Proportional to 20,269,729.20, 30,404,593.80 and 5,123,660.70

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Solution

The fourth proportional to 20,269,729.20, 30,404,593.80 and 5,123,660.70 is: 7,685,491.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269,729.20 : 30,404,593.80 = 5,123,660.70 : x
  2. Step 2: Convert to fraction form
    20,269,729.20/30,404,593.80 = 5,123,660.70/x
  3. Step 3: Cross multiply
    20,269,729.20x = 30,404,593.80 × 5,123,660.70
  4. Step 4: Simplify right side
    20,269,729.20x = 155,782,822,352,523.66
  5. Step 5: Solve for x
    x = 155,782,822,352,523.66/20,269,729.20
  6. Step 6: Final answer
    x = 7,685,491.05

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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.