Home / 36,218.38-49,981.54-21,121.51

Finding the Fourth Proportional to 36,218.38, 49,981.54 and 21,121.51

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Solution

The fourth proportional to 36,218.38, 49,981.54 and 21,121.51 is: 29,147.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,218.38 : 49,981.54 = 21,121.51 : x
  2. Step 2: Convert to fraction form
    36,218.38/49,981.54 = 21,121.51/x
  3. Step 3: Cross multiply
    36,218.38x = 49,981.54 × 21,121.51
  4. Step 4: Simplify right side
    36,218.38x = 1,055,685,347.02
  5. Step 5: Solve for x
    x = 1,055,685,347.02/36,218.38
  6. Step 6: Final answer
    x = 29,147.78

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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.