Home / 18,687,737.20-28,031,605.80-7,328,556.40

Finding the Fourth Proportional to 18,687,737.20, 28,031,605.80 and 7,328,556.40

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Solution

The fourth proportional to 18,687,737.20, 28,031,605.80 and 7,328,556.40 is: 10,992,834.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687,737.20 : 28,031,605.80 = 7,328,556.40 : x
  2. Step 2: Convert to fraction form
    18,687,737.20/28,031,605.80 = 7,328,556.40/x
  3. Step 3: Cross multiply
    18,687,737.20x = 28,031,605.80 × 7,328,556.40
  4. Step 4: Simplify right side
    18,687,737.20x = 205,431,204,087,867.12
  5. Step 5: Solve for x
    x = 205,431,204,087,867.12/18,687,737.20
  6. Step 6: Final answer
    x = 10,992,834.60

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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.