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Finding the Fourth Proportional to 18,431.90, 27,652.02 and 6,745.12

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Solution

The fourth proportional to 18,431.90, 27,652.02 and 6,745.12 is: 10,119.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.90 : 27,652.02 = 6,745.12 : x
  2. Step 2: Convert to fraction form
    18,431.90/27,652.02 = 6,745.12/x
  3. Step 3: Cross multiply
    18,431.90x = 27,652.02 × 6,745.12
  4. Step 4: Simplify right side
    18,431.90x = 186,516,193.14
  5. Step 5: Solve for x
    x = 186,516,193.14/18,431.90
  6. Step 6: Final answer
    x = 10,119.21

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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.