Home / 18,815,720.60-28,218,121.38-7,885,624.64

Finding the Fourth Proportional to 18,815,720.60, 28,218,121.38 and 7,885,624.64

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Solution

The fourth proportional to 18,815,720.60, 28,218,121.38 and 7,885,624.64 is: 11,826,148.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815,720.60 : 28,218,121.38 = 7,885,624.64 : x
  2. Step 2: Convert to fraction form
    18,815,720.60/28,218,121.38 = 7,885,624.64/x
  3. Step 3: Cross multiply
    18,815,720.60x = 28,218,121.38 × 7,885,624.64
  4. Step 4: Simplify right side
    18,815,720.60x = 222,517,513,107,548.19
  5. Step 5: Solve for x
    x = 222,517,513,107,548.19/18,815,720.60
  6. Step 6: Final answer
    x = 11,826,148.88

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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.