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Finding the Fourth Proportional to 18,592.84, 27,864.66 and 13,639.29

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Solution

The fourth proportional to 18,592.84, 27,864.66 and 13,639.29 is: 20,440.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,592.84 : 27,864.66 = 13,639.29 : x
  2. Step 2: Convert to fraction form
    18,592.84/27,864.66 = 13,639.29/x
  3. Step 3: Cross multiply
    18,592.84x = 27,864.66 × 13,639.29
  4. Step 4: Simplify right side
    18,592.84x = 380,054,048.43
  5. Step 5: Solve for x
    x = 380,054,048.43/18,592.84
  6. Step 6: Final answer
    x = 20,440.88

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.