Home / 20,530,191.76-28,329,741.30-12,268,609.18

Finding the Fourth Proportional to 20,530,191.76, 28,329,741.30 and 12,268,609.18

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Solution

The fourth proportional to 20,530,191.76, 28,329,741.30 and 12,268,609.18 is: 16,929,531.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530,191.76 : 28,329,741.30 = 12,268,609.18 : x
  2. Step 2: Convert to fraction form
    20,530,191.76/28,329,741.30 = 12,268,609.18/x
  3. Step 3: Cross multiply
    20,530,191.76x = 28,329,741.30 × 12,268,609.18
  4. Step 4: Simplify right side
    20,530,191.76x = 347,566,524,180,205.12
  5. Step 5: Solve for x
    x = 347,566,524,180,205.12/20,530,191.76
  6. Step 6: Final answer
    x = 16,929,531.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.