Home / 18,721,876.20-28,085,438.70-7,359,682.20

Finding the Fourth Proportional to 18,721,876.20, 28,085,438.70 and 7,359,682.20

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Solution

The fourth proportional to 18,721,876.20, 28,085,438.70 and 7,359,682.20 is: 11,040,554.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,876.20 : 28,085,438.70 = 7,359,682.20 : x
  2. Step 2: Convert to fraction form
    18,721,876.20/28,085,438.70 = 7,359,682.20/x
  3. Step 3: Cross multiply
    18,721,876.20x = 28,085,438.70 × 7,359,682.20
  4. Step 4: Simplify right side
    18,721,876.20x = 206,699,903,279,581.12
  5. Step 5: Solve for x
    x = 206,699,903,279,581.12/18,721,876.20
  6. Step 6: Final answer
    x = 11,040,554.97

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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.