Home / 10,501,280.40-15,751,920.60-7,981,856.40

Finding the Fourth Proportional to 10,501,280.40, 15,751,920.60 and 7,981,856.40

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Solution

The fourth proportional to 10,501,280.40, 15,751,920.60 and 7,981,856.40 is: 11,972,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,501,280.40 : 15,751,920.60 = 7,981,856.40 : x
  2. Step 2: Convert to fraction form
    10,501,280.40/15,751,920.60 = 7,981,856.40/x
  3. Step 3: Cross multiply
    10,501,280.40x = 15,751,920.60 × 7,981,856.40
  4. Step 4: Simplify right side
    10,501,280.40x = 125,729,568,253,401.84
  5. Step 5: Solve for x
    x = 125,729,568,253,401.84/10,501,280.40
  6. Step 6: Final answer
    x = 11,972,784.60

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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.