Home / 20,969,531.20-31,456,113.21-6,399,728.53

Finding the Fourth Proportional to 20,969,531.20, 31,456,113.21 and 6,399,728.53

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Solution

The fourth proportional to 20,969,531.20, 31,456,113.21 and 6,399,728.53 is: 9,600,147.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969,531.20 : 31,456,113.21 = 6,399,728.53 : x
  2. Step 2: Convert to fraction form
    20,969,531.20/31,456,113.21 = 6,399,728.53/x
  3. Step 3: Cross multiply
    20,969,531.20x = 31,456,113.21 × 6,399,728.53
  4. Step 4: Simplify right side
    20,969,531.20x = 201,310,585,074,306.59
  5. Step 5: Solve for x
    x = 201,310,585,074,306.59/20,969,531.20
  6. Step 6: Final answer
    x = 9,600,147.14

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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.