Home / 13,394,630.19-20,085,445.79-7,856,678.72

Finding the Fourth Proportional to 13,394,630.19, 20,085,445.79 and 7,856,678.72

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Solution

The fourth proportional to 13,394,630.19, 20,085,445.79 and 7,856,678.72 is: 11,781,205.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394,630.19 : 20,085,445.79 = 7,856,678.72 : x
  2. Step 2: Convert to fraction form
    13,394,630.19/20,085,445.79 = 7,856,678.72/x
  3. Step 3: Cross multiply
    13,394,630.19x = 20,085,445.79 × 7,856,678.72
  4. Step 4: Simplify right side
    13,394,630.19x = 157,804,894,380,295.97
  5. Step 5: Solve for x
    x = 157,804,894,380,295.97/13,394,630.19
  6. Step 6: Final answer
    x = 11,781,205.76

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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.