Home / 20,511,523.20-28,314,617.56-12,780,385.22

Finding the Fourth Proportional to 20,511,523.20, 28,314,617.56 and 12,780,385.22

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Solution

The fourth proportional to 20,511,523.20, 28,314,617.56 and 12,780,385.22 is: 17,642,362.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511,523.20 : 28,314,617.56 = 12,780,385.22 : x
  2. Step 2: Convert to fraction form
    20,511,523.20/28,314,617.56 = 12,780,385.22/x
  3. Step 3: Cross multiply
    20,511,523.20x = 28,314,617.56 × 12,780,385.22
  4. Step 4: Simplify right side
    20,511,523.20x = 361,871,719,773,776.44
  5. Step 5: Solve for x
    x = 361,871,719,773,776.44/20,511,523.20
  6. Step 6: Final answer
    x = 17,642,362.11

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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.