Home / 12,921,707.80-17,832,076.38-7,120,697.14

Finding the Fourth Proportional to 12,921,707.80, 17,832,076.38 and 7,120,697.14

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Solution

The fourth proportional to 12,921,707.80, 17,832,076.38 and 7,120,697.14 is: 9,826,627.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,707.80 : 17,832,076.38 = 7,120,697.14 : x
  2. Step 2: Convert to fraction form
    12,921,707.80/17,832,076.38 = 7,120,697.14/x
  3. Step 3: Cross multiply
    12,921,707.80x = 17,832,076.38 × 7,120,697.14
  4. Step 4: Simplify right side
    12,921,707.80x = 126,976,815,279,327.55
  5. Step 5: Solve for x
    x = 126,976,815,279,327.55/12,921,707.80
  6. Step 6: Final answer
    x = 9,826,627.97

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1.5x scale

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.