Home / 20,829,217.98-28,743,999.75-11,662,188.78

Finding the Fourth Proportional to 20,829,217.98, 28,743,999.75 and 11,662,188.78

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Solution

The fourth proportional to 20,829,217.98, 28,743,999.75 and 11,662,188.78 is: 16,093,640.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829,217.98 : 28,743,999.75 = 11,662,188.78 : x
  2. Step 2: Convert to fraction form
    20,829,217.98/28,743,999.75 = 11,662,188.78/x
  3. Step 3: Cross multiply
    20,829,217.98x = 28,743,999.75 × 11,662,188.78
  4. Step 4: Simplify right side
    20,829,217.98x = 335,217,951,376,772.81
  5. Step 5: Solve for x
    x = 335,217,951,376,772.81/20,829,217.98
  6. Step 6: Final answer
    x = 16,093,640.75

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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.