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Finding the Fourth Proportional to 39,773.54, 54,886.99 and 21,868.39

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Solution

The fourth proportional to 39,773.54, 54,886.99 and 21,868.39 is: 30,178.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,773.54 : 54,886.99 = 21,868.39 : x
  2. Step 2: Convert to fraction form
    39,773.54/54,886.99 = 21,868.39/x
  3. Step 3: Cross multiply
    39,773.54x = 54,886.99 × 21,868.39
  4. Step 4: Simplify right side
    39,773.54x = 1,200,290,103.25
  5. Step 5: Solve for x
    x = 1,200,290,103.25/39,773.54
  6. Step 6: Final answer
    x = 30,178.11

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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.