Home / 20,396,105.08-28,148,658.30-15,230,498.56

Finding the Fourth Proportional to 20,396,105.08, 28,148,658.30 and 15,230,498.56

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Solution

The fourth proportional to 20,396,105.08, 28,148,658.30 and 15,230,498.56 is: 21,019,606.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396,105.08 : 28,148,658.30 = 15,230,498.56 : x
  2. Step 2: Convert to fraction form
    20,396,105.08/28,148,658.30 = 15,230,498.56/x
  3. Step 3: Cross multiply
    20,396,105.08x = 28,148,658.30 × 15,230,498.56
  4. Step 4: Simplify right side
    20,396,105.08x = 428,718,099,704,082.06
  5. Step 5: Solve for x
    x = 428,718,099,704,082.06/20,396,105.08
  6. Step 6: Final answer
    x = 21,019,606.34

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1.5x scale

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.