Home / 15,202,422.78-20,981,430.70-9,321,016.86

Finding the Fourth Proportional to 15,202,422.78, 20,981,430.70 and 9,321,016.86

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Solution

The fourth proportional to 15,202,422.78, 20,981,430.70 and 9,321,016.86 is: 12,864,283.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,202,422.78 : 20,981,430.70 = 9,321,016.86 : x
  2. Step 2: Convert to fraction form
    15,202,422.78/20,981,430.70 = 9,321,016.86/x
  3. Step 3: Cross multiply
    15,202,422.78x = 20,981,430.70 × 9,321,016.86
  4. Step 4: Simplify right side
    15,202,422.78x = 195,568,269,301,621.59
  5. Step 5: Solve for x
    x = 195,568,269,301,621.59/15,202,422.78
  6. Step 6: Final answer
    x = 12,864,283.02

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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.