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Finding the Fourth Proportional to 39,351.49, 54,305.11 and 21,446.49

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Solution

The fourth proportional to 39,351.49, 54,305.11 and 21,446.49 is: 29,596.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,351.49 : 54,305.11 = 21,446.49 : x
  2. Step 2: Convert to fraction form
    39,351.49/54,305.11 = 21,446.49/x
  3. Step 3: Cross multiply
    39,351.49x = 54,305.11 × 21,446.49
  4. Step 4: Simplify right side
    39,351.49x = 1,164,654,064.51
  5. Step 5: Solve for x
    x = 1,164,654,064.51/39,351.49
  6. Step 6: Final answer
    x = 29,596.19

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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.