Home / 20,854.97-31,282.21-8,374.77

Finding the Fourth Proportional to 20,854.97, 31,282.21 and 8,374.77

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Solution

The fourth proportional to 20,854.97, 31,282.21 and 8,374.77 is: 12,562.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.97 : 31,282.21 = 8,374.77 : x
  2. Step 2: Convert to fraction form
    20,854.97/31,282.21 = 8,374.77/x
  3. Step 3: Cross multiply
    20,854.97x = 31,282.21 × 8,374.77
  4. Step 4: Simplify right side
    20,854.97x = 261,981,271.97
  5. Step 5: Solve for x
    x = 261,981,271.97/20,854.97
  6. Step 6: Final answer
    x = 12,562.05

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1.5x scale

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.