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Finding the Fourth Proportional to 18,492.21, 27,750.78 and 8,632.44

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Solution

The fourth proportional to 18,492.21, 27,750.78 and 8,632.44 is: 12,954.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492.21 : 27,750.78 = 8,632.44 : x
  2. Step 2: Convert to fraction form
    18,492.21/27,750.78 = 8,632.44/x
  3. Step 3: Cross multiply
    18,492.21x = 27,750.78 × 8,632.44
  4. Step 4: Simplify right side
    18,492.21x = 239,556,943.30
  5. Step 5: Solve for x
    x = 239,556,943.30/18,492.21
  6. Step 6: Final answer
    x = 12,954.48

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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.