Home / 39,747.78-54,852.08-21,843.14

Finding the Fourth Proportional to 39,747.78, 54,852.08 and 21,843.14

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Solution

The fourth proportional to 39,747.78, 54,852.08 and 21,843.14 is: 30,143.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,747.78 : 54,852.08 = 21,843.14 : x
  2. Step 2: Convert to fraction form
    39,747.78/54,852.08 = 21,843.14/x
  3. Step 3: Cross multiply
    39,747.78x = 54,852.08 × 21,843.14
  4. Step 4: Simplify right side
    39,747.78x = 1,198,141,279.26
  5. Step 5: Solve for x
    x = 1,198,141,279.26/39,747.78
  6. Step 6: Final answer
    x = 30,143.60

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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.