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Finding the Fourth Proportional to 27,719.68, 38,253.27 and 15,144.70

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Solution

The fourth proportional to 27,719.68, 38,253.27 and 15,144.70 is: 20,899.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,719.68 : 38,253.27 = 15,144.70 : x
  2. Step 2: Convert to fraction form
    27,719.68/38,253.27 = 15,144.70/x
  3. Step 3: Cross multiply
    27,719.68x = 38,253.27 × 15,144.70
  4. Step 4: Simplify right side
    27,719.68x = 579,334,259.33
  5. Step 5: Solve for x
    x = 579,334,259.33/27,719.68
  6. Step 6: Final answer
    x = 20,899.75

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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.