Home / 10,501,280.90-15,751,921.35-7,981,856.90

Finding the Fourth Proportional to 10,501,280.90, 15,751,921.35 and 7,981,856.90

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Solution

The fourth proportional to 10,501,280.90, 15,751,921.35 and 7,981,856.90 is: 11,972,785.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,501,280.90 : 15,751,921.35 = 7,981,856.90 : x
  2. Step 2: Convert to fraction form
    10,501,280.90/15,751,921.35 = 7,981,856.90/x
  3. Step 3: Cross multiply
    10,501,280.90x = 15,751,921.35 × 7,981,856.90
  4. Step 4: Simplify right side
    10,501,280.90x = 125,729,582,115,754.81
  5. Step 5: Solve for x
    x = 125,729,582,115,754.81/10,501,280.90
  6. Step 6: Final answer
    x = 11,972,785.35

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Similar ratio
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1.5x scale

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.