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Finding the Fourth Proportional to 39,182.84, 54,073.48 and 21,279

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Solution

The fourth proportional to 39,182.84, 54,073.48 and 21,279 is: 29,365.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,182.84 : 54,073.48 = 21,279 : x
  2. Step 2: Convert to fraction form
    39,182.84/54,073.48 = 21,279/x
  3. Step 3: Cross multiply
    39,182.84x = 54,073.48 × 21,279
  4. Step 4: Simplify right side
    39,182.84x = 1,150,629,580.92
  5. Step 5: Solve for x
    x = 1,150,629,580.92/39,182.84
  6. Step 6: Final answer
    x = 29,365.65

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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.