Home / 20,841.75-31,275.39-8,360.46

Finding the Fourth Proportional to 20,841.75, 31,275.39 and 8,360.46

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Solution

The fourth proportional to 20,841.75, 31,275.39 and 8,360.46 is: 12,545.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.75 : 31,275.39 = 8,360.46 : x
  2. Step 2: Convert to fraction form
    20,841.75/31,275.39 = 8,360.46/x
  3. Step 3: Cross multiply
    20,841.75x = 31,275.39 × 8,360.46
  4. Step 4: Simplify right side
    20,841.75x = 261,476,647.08
  5. Step 5: Solve for x
    x = 261,476,647.08/20,841.75
  6. Step 6: Final answer
    x = 12,545.81

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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.