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Finding the Fourth Proportional to 19,965.26, 27,551.76 and 11,581.76

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Solution

The fourth proportional to 19,965.26, 27,551.76 and 11,581.76 is: 15,982.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.26 : 27,551.76 = 11,581.76 : x
  2. Step 2: Convert to fraction form
    19,965.26/27,551.76 = 11,581.76/x
  3. Step 3: Cross multiply
    19,965.26x = 27,551.76 × 11,581.76
  4. Step 4: Simplify right side
    19,965.26x = 319,097,871.90
  5. Step 5: Solve for x
    x = 319,097,871.90/19,965.26
  6. Step 6: Final answer
    x = 15,982.66

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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.