Home / 20,112.30-30,168.45-6,965.10

Finding the Fourth Proportional to 20,112.30, 30,168.45 and 6,965.10

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Solution

The fourth proportional to 20,112.30, 30,168.45 and 6,965.10 is: 10,447.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.30 : 30,168.45 = 6,965.10 : x
  2. Step 2: Convert to fraction form
    20,112.30/30,168.45 = 6,965.10/x
  3. Step 3: Cross multiply
    20,112.30x = 30,168.45 × 6,965.10
  4. Step 4: Simplify right side
    20,112.30x = 210,126,271.10
  5. Step 5: Solve for x
    x = 210,126,271.10/20,112.30
  6. Step 6: Final answer
    x = 10,447.65

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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.