Home / 20,505,959.20-30,734,055.60-9,134,336.80

Finding the Fourth Proportional to 20,505,959.20, 30,734,055.60 and 9,134,336.80

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Solution

The fourth proportional to 20,505,959.20, 30,734,055.60 and 9,134,336.80 is: 13,690,421.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505,959.20 : 30,734,055.60 = 9,134,336.80 : x
  2. Step 2: Convert to fraction form
    20,505,959.20/30,734,055.60 = 9,134,336.80/x
  3. Step 3: Cross multiply
    20,505,959.20x = 30,734,055.60 × 9,134,336.80
  4. Step 4: Simplify right side
    20,505,959.20x = 280,735,215,080,326.12
  5. Step 5: Solve for x
    x = 280,735,215,080,326.12/20,505,959.20
  6. Step 6: Final answer
    x = 13,690,421.03

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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.