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Finding the Fourth Proportional to 18,375.84, 27,564.08 and 5,228.55

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Solution

The fourth proportional to 18,375.84, 27,564.08 and 5,228.55 is: 7,842.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.84 : 27,564.08 = 5,228.55 : x
  2. Step 2: Convert to fraction form
    18,375.84/27,564.08 = 5,228.55/x
  3. Step 3: Cross multiply
    18,375.84x = 27,564.08 × 5,228.55
  4. Step 4: Simplify right side
    18,375.84x = 144,120,144.34
  5. Step 5: Solve for x
    x = 144,120,144.34/18,375.84
  6. Step 6: Final answer
    x = 7,842.91

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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.