Home / 10,145.25-15,217.88-3,219.75

Finding the Fourth Proportional to 10,145.25, 15,217.88 and 3,219.75

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Solution

The fourth proportional to 10,145.25, 15,217.88 and 3,219.75 is: 4,829.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.25 : 15,217.88 = 3,219.75 : x
  2. Step 2: Convert to fraction form
    10,145.25/15,217.88 = 3,219.75/x
  3. Step 3: Cross multiply
    10,145.25x = 15,217.88 × 3,219.75
  4. Step 4: Simplify right side
    10,145.25x = 48,997,769.13
  5. Step 5: Solve for x
    x = 48,997,769.13/10,145.25
  6. Step 6: Final answer
    x = 4,829.63

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Similar ratio
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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.