Home / 20,760.76-28,649.58-11,329.16

Finding the Fourth Proportional to 20,760.76, 28,649.58 and 11,329.16

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Solution

The fourth proportional to 20,760.76, 28,649.58 and 11,329.16 is: 15,634.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.76 : 28,649.58 = 11,329.16 : x
  2. Step 2: Convert to fraction form
    20,760.76/28,649.58 = 11,329.16/x
  3. Step 3: Cross multiply
    20,760.76x = 28,649.58 × 11,329.16
  4. Step 4: Simplify right side
    20,760.76x = 324,575,675.75
  5. Step 5: Solve for x
    x = 324,575,675.75/20,760.76
  6. Step 6: Final answer
    x = 15,634.09

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Half scale
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Double scale
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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.