Home / 20,702,319.70-28,569,311.96-11,881,067.55

Finding the Fourth Proportional to 20,702,319.70, 28,569,311.96 and 11,881,067.55

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Solution

The fourth proportional to 20,702,319.70, 28,569,311.96 and 11,881,067.55 is: 16,395,936.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702,319.70 : 28,569,311.96 = 11,881,067.55 : x
  2. Step 2: Convert to fraction form
    20,702,319.70/28,569,311.96 = 11,881,067.55/x
  3. Step 3: Cross multiply
    20,702,319.70x = 28,569,311.96 × 11,881,067.55
  4. Step 4: Simplify right side
    20,702,319.70x = 339,433,925,182,359.62
  5. Step 5: Solve for x
    x = 339,433,925,182,359.62/20,702,319.70
  6. Step 6: Final answer
    x = 16,395,936.79

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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.