Home / 20,361,981.28-30,565,103.28-8,239,790.56

Finding the Fourth Proportional to 20,361,981.28, 30,565,103.28 and 8,239,790.56

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Solution

The fourth proportional to 20,361,981.28, 30,565,103.28 and 8,239,790.56 is: 12,368,641.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361,981.28 : 30,565,103.28 = 8,239,790.56 : x
  2. Step 2: Convert to fraction form
    20,361,981.28/30,565,103.28 = 8,239,790.56/x
  3. Step 3: Cross multiply
    20,361,981.28x = 30,565,103.28 × 8,239,790.56
  4. Step 4: Simplify right side
    20,361,981.28x = 251,850,049,471,969.03
  5. Step 5: Solve for x
    x = 251,850,049,471,969.03/20,361,981.28
  6. Step 6: Final answer
    x = 12,368,641.64

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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.