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Finding the Fourth Proportional to 39,556.50, 54,587.97 and 21,892.50

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Solution

The fourth proportional to 39,556.50, 54,587.97 and 21,892.50 is: 30,211.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,556.50 : 54,587.97 = 21,892.50 : x
  2. Step 2: Convert to fraction form
    39,556.50/54,587.97 = 21,892.50/x
  3. Step 3: Cross multiply
    39,556.50x = 54,587.97 × 21,892.50
  4. Step 4: Simplify right side
    39,556.50x = 1,195,067,133.23
  5. Step 5: Solve for x
    x = 1,195,067,133.23/39,556.50
  6. Step 6: Final answer
    x = 30,211.65

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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.