Home / 20,745,890.98-28,642,249.98-13,206,269.34

Finding the Fourth Proportional to 20,745,890.98, 28,642,249.98 and 13,206,269.34

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Solution

The fourth proportional to 20,745,890.98, 28,642,249.98 and 13,206,269.34 is: 18,232,876.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745,890.98 : 28,642,249.98 = 13,206,269.34 : x
  2. Step 2: Convert to fraction form
    20,745,890.98/28,642,249.98 = 13,206,269.34/x
  3. Step 3: Cross multiply
    20,745,890.98x = 28,642,249.98 × 13,206,269.34
  4. Step 4: Simplify right side
    20,745,890.98x = 378,257,267,739,489.62
  5. Step 5: Solve for x
    x = 378,257,267,739,489.62/20,745,890.98
  6. Step 6: Final answer
    x = 18,232,876.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.