Home / 20,199.08-30,302.72-8,512.30

Finding the Fourth Proportional to 20,199.08, 30,302.72 and 8,512.30

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Solution

The fourth proportional to 20,199.08, 30,302.72 and 8,512.30 is: 12,770.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.08 : 30,302.72 = 8,512.30 : x
  2. Step 2: Convert to fraction form
    20,199.08/30,302.72 = 8,512.30/x
  3. Step 3: Cross multiply
    20,199.08x = 30,302.72 × 8,512.30
  4. Step 4: Simplify right side
    20,199.08x = 257,945,843.46
  5. Step 5: Solve for x
    x = 257,945,843.46/20,199.08
  6. Step 6: Final answer
    x = 12,770.18

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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.