Home / 26,561.76-36,691.20-21,249.60

Finding the Fourth Proportional to 26,561.76, 36,691.20 and 21,249.60

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Solution

The fourth proportional to 26,561.76, 36,691.20 and 21,249.60 is: 29,353.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,561.76 : 36,691.20 = 21,249.60 : x
  2. Step 2: Convert to fraction form
    26,561.76/36,691.20 = 21,249.60/x
  3. Step 3: Cross multiply
    26,561.76x = 36,691.20 × 21,249.60
  4. Step 4: Simplify right side
    26,561.76x = 779,673,323.52
  5. Step 5: Solve for x
    x = 779,673,323.52/26,561.76
  6. Step 6: Final answer
    x = 29,353.23

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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.