Home / 20,752.67-28,639.13-11,321.22

Finding the Fourth Proportional to 20,752.67, 28,639.13 and 11,321.22

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Solution

The fourth proportional to 20,752.67, 28,639.13 and 11,321.22 is: 15,623.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.67 : 28,639.13 = 11,321.22 : x
  2. Step 2: Convert to fraction form
    20,752.67/28,639.13 = 11,321.22/x
  3. Step 3: Cross multiply
    20,752.67x = 28,639.13 × 11,321.22
  4. Step 4: Simplify right side
    20,752.67x = 324,229,919.64
  5. Step 5: Solve for x
    x = 324,229,919.64/20,752.67
  6. Step 6: Final answer
    x = 15,623.53

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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.