Home / 18,707,946.30-28,061,919.45-12,543,230.70

Finding the Fourth Proportional to 18,707,946.30, 28,061,919.45 and 12,543,230.70

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Solution

The fourth proportional to 18,707,946.30, 28,061,919.45 and 12,543,230.70 is: 18,814,846.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707,946.30 : 28,061,919.45 = 12,543,230.70 : x
  2. Step 2: Convert to fraction form
    18,707,946.30/28,061,919.45 = 12,543,230.70/x
  3. Step 3: Cross multiply
    18,707,946.30x = 28,061,919.45 × 12,543,230.70
  4. Step 4: Simplify right side
    18,707,946.30x = 351,987,129,546,167.06
  5. Step 5: Solve for x
    x = 351,987,129,546,167.06/18,707,946.30
  6. Step 6: Final answer
    x = 18,814,846.05

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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.