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Finding the Fourth Proportional to 39,458.75, 54,452.75 and 21,553.76

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Solution

The fourth proportional to 39,458.75, 54,452.75 and 21,553.76 is: 29,744.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,458.75 : 54,452.75 = 21,553.76 : x
  2. Step 2: Convert to fraction form
    39,458.75/54,452.75 = 21,553.76/x
  3. Step 3: Cross multiply
    39,458.75x = 54,452.75 × 21,553.76
  4. Step 4: Simplify right side
    39,458.75x = 1,173,661,504.84
  5. Step 5: Solve for x
    x = 1,173,661,504.84/39,458.75
  6. Step 6: Final answer
    x = 29,744.01

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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.