Home / 20,391,785.70-30,587,678.55-11,321,859.30

Finding the Fourth Proportional to 20,391,785.70, 30,587,678.55 and 11,321,859.30

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Solution

The fourth proportional to 20,391,785.70, 30,587,678.55 and 11,321,859.30 is: 16,982,788.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391,785.70 : 30,587,678.55 = 11,321,859.30 : x
  2. Step 2: Convert to fraction form
    20,391,785.70/30,587,678.55 = 11,321,859.30/x
  3. Step 3: Cross multiply
    20,391,785.70x = 30,587,678.55 × 11,321,859.30
  4. Step 4: Simplify right side
    20,391,785.70x = 346,309,392,856,728.06
  5. Step 5: Solve for x
    x = 346,309,392,856,728.06/20,391,785.70
  6. Step 6: Final answer
    x = 16,982,788.95

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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.