Home / 12,145,215.30-18,215,198.55-5,321,775.30

Finding the Fourth Proportional to 12,145,215.30, 18,215,198.55 and 5,321,775.30

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Solution

The fourth proportional to 12,145,215.30, 18,215,198.55 and 5,321,775.30 is: 7,981,512.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145,215.30 : 18,215,198.55 = 5,321,775.30 : x
  2. Step 2: Convert to fraction form
    12,145,215.30/18,215,198.55 = 5,321,775.30/x
  3. Step 3: Cross multiply
    12,145,215.30x = 18,215,198.55 × 5,321,775.30
  4. Step 4: Simplify right side
    12,145,215.30x = 96,937,193,727,985.81
  5. Step 5: Solve for x
    x = 96,937,193,727,985.81/12,145,215.30
  6. Step 6: Final answer
    x = 7,981,512.99

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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.