Home / 20,771,919.98-28,663,747.82-11,479,378.86

Finding the Fourth Proportional to 20,771,919.98, 28,663,747.82 and 11,479,378.86

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Solution

The fourth proportional to 20,771,919.98, 28,663,747.82 and 11,479,378.86 is: 15,840,712.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771,919.98 : 28,663,747.82 = 11,479,378.86 : x
  2. Step 2: Convert to fraction form
    20,771,919.98/28,663,747.82 = 11,479,378.86/x
  3. Step 3: Cross multiply
    20,771,919.98x = 28,663,747.82 × 11,479,378.86
  4. Step 4: Simplify right side
    20,771,919.98x = 329,042,020,773,279.06
  5. Step 5: Solve for x
    x = 329,042,020,773,279.06/20,771,919.98
  6. Step 6: Final answer
    x = 15,840,712.90

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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.