Home / 15,511.43-23,287.80-8,121.80

Finding the Fourth Proportional to 15,511.43, 23,287.80 and 8,121.80

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Solution

The fourth proportional to 15,511.43, 23,287.80 and 8,121.80 is: 12,193.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.43 : 23,287.80 = 8,121.80 : x
  2. Step 2: Convert to fraction form
    15,511.43/23,287.80 = 8,121.80/x
  3. Step 3: Cross multiply
    15,511.43x = 23,287.80 × 8,121.80
  4. Step 4: Simplify right side
    15,511.43x = 189,138,854.04
  5. Step 5: Solve for x
    x = 189,138,854.04/15,511.43
  6. Step 6: Final answer
    x = 12,193.51

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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.