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Finding the Fourth Proportional to 39,808.84, 54,934.04 and 21,900.96

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Solution

The fourth proportional to 39,808.84, 54,934.04 and 21,900.96 is: 30,222.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,808.84 : 54,934.04 = 21,900.96 : x
  2. Step 2: Convert to fraction form
    39,808.84/54,934.04 = 21,900.96/x
  3. Step 3: Cross multiply
    39,808.84x = 54,934.04 × 21,900.96
  4. Step 4: Simplify right side
    39,808.84x = 1,203,108,212.68
  5. Step 5: Solve for x
    x = 1,203,108,212.68/39,808.84
  6. Step 6: Final answer
    x = 30,222.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.