Home / 20,937,743.20-31,383,286.80-8,153,999.20

Finding the Fourth Proportional to 20,937,743.20, 31,383,286.80 and 8,153,999.20

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Solution

The fourth proportional to 20,937,743.20, 31,383,286.80 and 8,153,999.20 is: 12,221,913.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937,743.20 : 31,383,286.80 = 8,153,999.20 : x
  2. Step 2: Convert to fraction form
    20,937,743.20/31,383,286.80 = 8,153,999.20/x
  3. Step 3: Cross multiply
    20,937,743.20x = 31,383,286.80 × 8,153,999.20
  4. Step 4: Simplify right side
    20,937,743.20x = 255,899,295,460,570.56
  5. Step 5: Solve for x
    x = 255,899,295,460,570.56/20,937,743.20
  6. Step 6: Final answer
    x = 12,221,913.94

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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.