Home / 12,921,705.56-17,832,073.26-7,120,694.90

Finding the Fourth Proportional to 12,921,705.56, 17,832,073.26 and 7,120,694.90

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Solution

The fourth proportional to 12,921,705.56, 17,832,073.26 and 7,120,694.90 is: 9,826,624.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,705.56 : 17,832,073.26 = 7,120,694.90 : x
  2. Step 2: Convert to fraction form
    12,921,705.56/17,832,073.26 = 7,120,694.90/x
  3. Step 3: Cross multiply
    12,921,705.56x = 17,832,073.26 × 7,120,694.90
  4. Step 4: Simplify right side
    12,921,705.56x = 126,976,753,118,908.39
  5. Step 5: Solve for x
    x = 126,976,753,118,908.39/12,921,705.56
  6. Step 6: Final answer
    x = 9,826,624.86

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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.