Home / 20,454.80-28,227.79-11,502.22

Finding the Fourth Proportional to 20,454.80, 28,227.79 and 11,502.22

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Solution

The fourth proportional to 20,454.80, 28,227.79 and 11,502.22 is: 15,873.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.80 : 28,227.79 = 11,502.22 : x
  2. Step 2: Convert to fraction form
    20,454.80/28,227.79 = 11,502.22/x
  3. Step 3: Cross multiply
    20,454.80x = 28,227.79 × 11,502.22
  4. Step 4: Simplify right side
    20,454.80x = 324,682,151.37
  5. Step 5: Solve for x
    x = 324,682,151.37/20,454.80
  6. Step 6: Final answer
    x = 15,873.16

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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.