Home / 20,455,422.90-30,679,785.81-8,324,396.34

Finding the Fourth Proportional to 20,455,422.90, 30,679,785.81 and 8,324,396.34

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Solution

The fourth proportional to 20,455,422.90, 30,679,785.81 and 8,324,396.34 is: 12,485,231.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455,422.90 : 30,679,785.81 = 8,324,396.34 : x
  2. Step 2: Convert to fraction form
    20,455,422.90/30,679,785.81 = 8,324,396.34/x
  3. Step 3: Cross multiply
    20,455,422.90x = 30,679,785.81 × 8,324,396.34
  4. Step 4: Simplify right side
    20,455,422.90x = 255,390,696,708,747.91
  5. Step 5: Solve for x
    x = 255,390,696,708,747.91/20,455,422.90
  6. Step 6: Final answer
    x = 12,485,231.81

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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.