Home / 36,143.78-54,195.91-20,138.18

Finding the Fourth Proportional to 36,143.78, 54,195.91 and 20,138.18

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Solution

The fourth proportional to 36,143.78, 54,195.91 and 20,138.18 is: 30,196.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,143.78 : 54,195.91 = 20,138.18 : x
  2. Step 2: Convert to fraction form
    36,143.78/54,195.91 = 20,138.18/x
  3. Step 3: Cross multiply
    36,143.78x = 54,195.91 × 20,138.18
  4. Step 4: Simplify right side
    36,143.78x = 1,091,406,669.52
  5. Step 5: Solve for x
    x = 1,091,406,669.52/36,143.78
  6. Step 6: Final answer
    x = 30,196.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.