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Finding the Fourth Proportional to 39,592.96, 54,637.80 and 21,687.76

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Solution

The fourth proportional to 39,592.96, 54,637.80 and 21,687.76 is: 29,928.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,592.96 : 54,637.80 = 21,687.76 : x
  2. Step 2: Convert to fraction form
    39,592.96/54,637.80 = 21,687.76/x
  3. Step 3: Cross multiply
    39,592.96x = 54,637.80 × 21,687.76
  4. Step 4: Simplify right side
    39,592.96x = 1,184,971,493.33
  5. Step 5: Solve for x
    x = 1,184,971,493.33/39,592.96
  6. Step 6: Final answer
    x = 29,928.84

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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.