Home / 10,220.76-15,331.28-2,825.69

Finding the Fourth Proportional to 10,220.76, 15,331.28 and 2,825.69

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Solution

The fourth proportional to 10,220.76, 15,331.28 and 2,825.69 is: 4,238.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.76 : 15,331.28 = 2,825.69 : x
  2. Step 2: Convert to fraction form
    10,220.76/15,331.28 = 2,825.69/x
  3. Step 3: Cross multiply
    10,220.76x = 15,331.28 × 2,825.69
  4. Step 4: Simplify right side
    10,220.76x = 43,321,353.80
  5. Step 5: Solve for x
    x = 43,321,353.80/10,220.76
  6. Step 6: Final answer
    x = 4,238.56

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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.