Home / 20,427,212.88-28,189,546.80-11,260,008.72

Finding the Fourth Proportional to 20,427,212.88, 28,189,546.80 and 11,260,008.72

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Solution

The fourth proportional to 20,427,212.88, 28,189,546.80 and 11,260,008.72 is: 15,538,808.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427,212.88 : 28,189,546.80 = 11,260,008.72 : x
  2. Step 2: Convert to fraction form
    20,427,212.88/28,189,546.80 = 11,260,008.72/x
  3. Step 3: Cross multiply
    20,427,212.88x = 28,189,546.80 × 11,260,008.72
  4. Step 4: Simplify right side
    20,427,212.88x = 317,414,542,780,848.12
  5. Step 5: Solve for x
    x = 317,414,542,780,848.12/20,427,212.88
  6. Step 6: Final answer
    x = 15,538,808.19

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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.