Home / 39,843.62-54,984.06-21,938.66

Finding the Fourth Proportional to 39,843.62, 54,984.06 and 21,938.66

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Solution

The fourth proportional to 39,843.62, 54,984.06 and 21,938.66 is: 30,275.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,843.62 : 54,984.06 = 21,938.66 : x
  2. Step 2: Convert to fraction form
    39,843.62/54,984.06 = 21,938.66/x
  3. Step 3: Cross multiply
    39,843.62x = 54,984.06 × 21,938.66
  4. Step 4: Simplify right side
    39,843.62x = 1,206,276,597.76
  5. Step 5: Solve for x
    x = 1,206,276,597.76/39,843.62
  6. Step 6: Final answer
    x = 30,275.28

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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.