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Finding the Fourth Proportional to 27,127.60, 37,431.76 and 15,191.44

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Solution

The fourth proportional to 27,127.60, 37,431.76 and 15,191.44 is: 20,961.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,127.60 : 37,431.76 = 15,191.44 : x
  2. Step 2: Convert to fraction form
    27,127.60/37,431.76 = 15,191.44/x
  3. Step 3: Cross multiply
    27,127.60x = 37,431.76 × 15,191.44
  4. Step 4: Simplify right side
    27,127.60x = 568,642,336.13
  5. Step 5: Solve for x
    x = 568,642,336.13/27,127.60
  6. Step 6: Final answer
    x = 20,961.76

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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.