Home / 15,215.33-20,995.25-8,500.70

Finding the Fourth Proportional to 15,215.33, 20,995.25 and 8,500.70

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Solution

The fourth proportional to 15,215.33, 20,995.25 and 8,500.70 is: 11,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.33 : 20,995.25 = 8,500.70 : x
  2. Step 2: Convert to fraction form
    15,215.33/20,995.25 = 8,500.70/x
  3. Step 3: Cross multiply
    15,215.33x = 20,995.25 × 8,500.70
  4. Step 4: Simplify right side
    15,215.33x = 178,474,174.20
  5. Step 5: Solve for x
    x = 178,474,174.20/15,215.33
  6. Step 6: Final answer
    x = 11,729.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.