Home / 11,221.20-16,837.20-8,587.80

Finding the Fourth Proportional to 11,221.20, 16,837.20 and 8,587.80

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Solution

The fourth proportional to 11,221.20, 16,837.20 and 8,587.80 is: 12,885.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.20 : 16,837.20 = 8,587.80 : x
  2. Step 2: Convert to fraction form
    11,221.20/16,837.20 = 8,587.80/x
  3. Step 3: Cross multiply
    11,221.20x = 16,837.20 × 8,587.80
  4. Step 4: Simplify right side
    11,221.20x = 144,594,506.16
  5. Step 5: Solve for x
    x = 144,594,506.16/11,221.20
  6. Step 6: Final answer
    x = 12,885.83

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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.