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Finding the Fourth Proportional to 18,531.84, 27,797.68 and 5,384.18

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Solution

The fourth proportional to 18,531.84, 27,797.68 and 5,384.18 is: 8,076.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.84 : 27,797.68 = 5,384.18 : x
  2. Step 2: Convert to fraction form
    18,531.84/27,797.68 = 5,384.18/x
  3. Step 3: Cross multiply
    18,531.84x = 27,797.68 × 5,384.18
  4. Step 4: Simplify right side
    18,531.84x = 149,667,712.70
  5. Step 5: Solve for x
    x = 149,667,712.70/18,531.84
  6. Step 6: Final answer
    x = 8,076.25

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1.5x scale

Why These Related Problems?

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