Home / 20,760.28-28,649.10-11,328.82

Finding the Fourth Proportional to 20,760.28, 28,649.10 and 11,328.82

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Solution

The fourth proportional to 20,760.28, 28,649.10 and 11,328.82 is: 15,633.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.28 : 28,649.10 = 11,328.82 : x
  2. Step 2: Convert to fraction form
    20,760.28/28,649.10 = 11,328.82/x
  3. Step 3: Cross multiply
    20,760.28x = 28,649.10 × 11,328.82
  4. Step 4: Simplify right side
    20,760.28x = 324,560,497.06
  5. Step 5: Solve for x
    x = 324,560,497.06/20,760.28
  6. Step 6: Final answer
    x = 15,633.72

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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.