Home / 28,206.20-42,293.10-8,481.80

Finding the Fourth Proportional to 28,206.20, 42,293.10 and 8,481.80

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Solution

The fourth proportional to 28,206.20, 42,293.10 and 8,481.80 is: 12,717.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,206.20 : 42,293.10 = 8,481.80 : x
  2. Step 2: Convert to fraction form
    28,206.20/42,293.10 = 8,481.80/x
  3. Step 3: Cross multiply
    28,206.20x = 42,293.10 × 8,481.80
  4. Step 4: Simplify right side
    28,206.20x = 358,721,615.58
  5. Step 5: Solve for x
    x = 358,721,615.58/28,206.20
  6. Step 6: Final answer
    x = 12,717.83

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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.