Home / 20,284.20-30,410.10-8,587.80

Finding the Fourth Proportional to 20,284.20, 30,410.10 and 8,587.80

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Solution

The fourth proportional to 20,284.20, 30,410.10 and 8,587.80 is: 12,874.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.20 : 30,410.10 = 8,587.80 : x
  2. Step 2: Convert to fraction form
    20,284.20/30,410.10 = 8,587.80/x
  3. Step 3: Cross multiply
    20,284.20x = 30,410.10 × 8,587.80
  4. Step 4: Simplify right side
    20,284.20x = 261,155,856.78
  5. Step 5: Solve for x
    x = 261,155,856.78/20,284.20
  6. Step 6: Final answer
    x = 12,874.84

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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.