Home / 13,471,311.70-20,206,967.55-7,788,610.90

Finding the Fourth Proportional to 13,471,311.70, 20,206,967.55 and 7,788,610.90

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Solution

The fourth proportional to 13,471,311.70, 20,206,967.55 and 7,788,610.90 is: 11,682,916.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,471,311.70 : 20,206,967.55 = 7,788,610.90 : x
  2. Step 2: Convert to fraction form
    13,471,311.70/20,206,967.55 = 7,788,610.90/x
  3. Step 3: Cross multiply
    13,471,311.70x = 20,206,967.55 × 7,788,610.90
  4. Step 4: Simplify right side
    13,471,311.70x = 157,384,207,715,876.31
  5. Step 5: Solve for x
    x = 157,384,207,715,876.31/13,471,311.70
  6. Step 6: Final answer
    x = 11,682,916.35

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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.