Home / 13,486,540.80-20,229,811.20-7,723,358.40

Finding the Fourth Proportional to 13,486,540.80, 20,229,811.20 and 7,723,358.40

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Solution

The fourth proportional to 13,486,540.80, 20,229,811.20 and 7,723,358.40 is: 11,585,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486,540.80 : 20,229,811.20 = 7,723,358.40 : x
  2. Step 2: Convert to fraction form
    13,486,540.80/20,229,811.20 = 7,723,358.40/x
  3. Step 3: Cross multiply
    13,486,540.80x = 20,229,811.20 × 7,723,358.40
  4. Step 4: Simplify right side
    13,486,540.80x = 156,242,082,261,934.09
  5. Step 5: Solve for x
    x = 156,242,082,261,934.09/13,486,540.80
  6. Step 6: Final answer
    x = 11,585,037.60

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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.