Home / 20,760.12-28,648.98-11,329.20

Finding the Fourth Proportional to 20,760.12, 28,648.98 and 11,329.20

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Solution

The fourth proportional to 20,760.12, 28,648.98 and 11,329.20 is: 15,634.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.12 : 28,648.98 = 11,329.20 : x
  2. Step 2: Convert to fraction form
    20,760.12/28,648.98 = 11,329.20/x
  3. Step 3: Cross multiply
    20,760.12x = 28,648.98 × 11,329.20
  4. Step 4: Simplify right side
    20,760.12x = 324,570,024.22
  5. Step 5: Solve for x
    x = 324,570,024.22/20,760.12
  6. Step 6: Final answer
    x = 15,634.30

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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.