Home / 18,927,843.90-28,391,765.85-5,280,963.90

Finding the Fourth Proportional to 18,927,843.90, 28,391,765.85 and 5,280,963.90

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Solution

The fourth proportional to 18,927,843.90, 28,391,765.85 and 5,280,963.90 is: 7,921,445.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,927,843.90 : 28,391,765.85 = 5,280,963.90 : x
  2. Step 2: Convert to fraction form
    18,927,843.90/28,391,765.85 = 5,280,963.90/x
  3. Step 3: Cross multiply
    18,927,843.90x = 28,391,765.85 × 5,280,963.90
  4. Step 4: Simplify right side
    18,927,843.90x = 149,935,890,511,102.84
  5. Step 5: Solve for x
    x = 149,935,890,511,102.84/18,927,843.90
  6. Step 6: Final answer
    x = 7,921,445.85

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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.