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Finding the Fourth Proportional to 39,746.66, 54,850.66 and 21,843.14

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Solution

The fourth proportional to 39,746.66, 54,850.66 and 21,843.14 is: 30,143.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,746.66 : 54,850.66 = 21,843.14 : x
  2. Step 2: Convert to fraction form
    39,746.66/54,850.66 = 21,843.14/x
  3. Step 3: Cross multiply
    39,746.66x = 54,850.66 × 21,843.14
  4. Step 4: Simplify right side
    39,746.66x = 1,198,110,645.47
  5. Step 5: Solve for x
    x = 1,198,110,645.47/39,746.66
  6. Step 6: Final answer
    x = 30,143.68

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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.