Home / 12,488,659.20-18,723,657.60-6,815,289.60

Finding the Fourth Proportional to 12,488,659.20, 18,723,657.60 and 6,815,289.60

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Solution

The fourth proportional to 12,488,659.20, 18,723,657.60 and 6,815,289.60 is: 10,217,842.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488,659.20 : 18,723,657.60 = 6,815,289.60 : x
  2. Step 2: Convert to fraction form
    12,488,659.20/18,723,657.60 = 6,815,289.60/x
  3. Step 3: Cross multiply
    12,488,659.20x = 18,723,657.60 × 6,815,289.60
  4. Step 4: Simplify right side
    12,488,659.20x = 127,607,148,915,240.97
  5. Step 5: Solve for x
    x = 127,607,148,915,240.97/12,488,659.20
  6. Step 6: Final answer
    x = 10,217,842.19

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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.