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Finding the Fourth Proportional to 39,853.64, 54,998.02 and 21,948.49

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Solution

The fourth proportional to 39,853.64, 54,998.02 and 21,948.49 is: 30,288.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,853.64 : 54,998.02 = 21,948.49 : x
  2. Step 2: Convert to fraction form
    39,853.64/54,998.02 = 21,948.49/x
  3. Step 3: Cross multiply
    39,853.64x = 54,998.02 × 21,948.49
  4. Step 4: Simplify right side
    39,853.64x = 1,207,123,491.99
  5. Step 5: Solve for x
    x = 1,207,123,491.99/39,853.64
  6. Step 6: Final answer
    x = 30,288.91

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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.