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Finding the Fourth Proportional to 27,654.84, 38,162.86 and 15,719.48

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Solution

The fourth proportional to 27,654.84, 38,162.86 and 15,719.48 is: 21,692.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,654.84 : 38,162.86 = 15,719.48 : x
  2. Step 2: Convert to fraction form
    27,654.84/38,162.86 = 15,719.48/x
  3. Step 3: Cross multiply
    27,654.84x = 38,162.86 × 15,719.48
  4. Step 4: Simplify right side
    27,654.84x = 599,900,314.51
  5. Step 5: Solve for x
    x = 599,900,314.51/27,654.84
  6. Step 6: Final answer
    x = 21,692.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.