Home / 20,122,309.20-30,180,742.20-8,000,691.60

Finding the Fourth Proportional to 20,122,309.20, 30,180,742.20 and 8,000,691.60

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Solution

The fourth proportional to 20,122,309.20, 30,180,742.20 and 8,000,691.60 is: 11,999,955.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122,309.20 : 30,180,742.20 = 8,000,691.60 : x
  2. Step 2: Convert to fraction form
    20,122,309.20/30,180,742.20 = 8,000,691.60/x
  3. Step 3: Cross multiply
    20,122,309.20x = 30,180,742.20 × 8,000,691.60
  4. Step 4: Simplify right side
    20,122,309.20x = 241,466,810,601,305.50
  5. Step 5: Solve for x
    x = 241,466,810,601,305.50/20,122,309.20
  6. Step 6: Final answer
    x = 11,999,955.28

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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.