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Finding the Fourth Proportional to 27,009.30, 40,441.05 and 21,177.30

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Solution

The fourth proportional to 27,009.30, 40,441.05 and 21,177.30 is: 31,708.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,009.30 : 40,441.05 = 21,177.30 : x
  2. Step 2: Convert to fraction form
    27,009.30/40,441.05 = 21,177.30/x
  3. Step 3: Cross multiply
    27,009.30x = 40,441.05 × 21,177.30
  4. Step 4: Simplify right side
    27,009.30x = 856,432,248.17
  5. Step 5: Solve for x
    x = 856,432,248.17/27,009.30
  6. Step 6: Final answer
    x = 31,708.79

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.