Home / 12,459,739.10-18,689,608.65-8,204,711.90

Finding the Fourth Proportional to 12,459,739.10, 18,689,608.65 and 8,204,711.90

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Solution

The fourth proportional to 12,459,739.10, 18,689,608.65 and 8,204,711.90 is: 12,307,067.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459,739.10 : 18,689,608.65 = 8,204,711.90 : x
  2. Step 2: Convert to fraction form
    12,459,739.10/18,689,608.65 = 8,204,711.90/x
  3. Step 3: Cross multiply
    12,459,739.10x = 18,689,608.65 × 8,204,711.90
  4. Step 4: Simplify right side
    12,459,739.10x = 153,342,854,496,997.94
  5. Step 5: Solve for x
    x = 153,342,854,496,997.94/12,459,739.10
  6. Step 6: Final answer
    x = 12,307,067.85

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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.