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Finding the Fourth Proportional to 27,765.18, 38,314.96 and 15,669.47

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Solution

The fourth proportional to 27,765.18, 38,314.96 and 15,669.47 is: 21,623.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,765.18 : 38,314.96 = 15,669.47 : x
  2. Step 2: Convert to fraction form
    27,765.18/38,314.96 = 15,669.47/x
  3. Step 3: Cross multiply
    27,765.18x = 38,314.96 × 15,669.47
  4. Step 4: Simplify right side
    27,765.18x = 600,375,037.92
  5. Step 5: Solve for x
    x = 600,375,037.92/27,765.18
  6. Step 6: Final answer
    x = 21,623.31

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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.