Home / 20,737,016.40-31,110,190.20-12,212,965.20

Finding the Fourth Proportional to 20,737,016.40, 31,110,190.20 and 12,212,965.20

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Solution

The fourth proportional to 20,737,016.40, 31,110,190.20 and 12,212,965.20 is: 18,322,195.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737,016.40 : 31,110,190.20 = 12,212,965.20 : x
  2. Step 2: Convert to fraction form
    20,737,016.40/31,110,190.20 = 12,212,965.20/x
  3. Step 3: Cross multiply
    20,737,016.40x = 31,110,190.20 × 12,212,965.20
  4. Step 4: Simplify right side
    20,737,016.40x = 379,947,670,277,981
  5. Step 5: Solve for x
    x = 379,947,670,277,981/20,737,016.40
  6. Step 6: Final answer
    x = 18,322,195.58

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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.