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Finding the Fourth Proportional to 18,139.01, 27,201.62 and 10,745.53

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Solution

The fourth proportional to 18,139.01, 27,201.62 and 10,745.53 is: 16,114.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.01 : 27,201.62 = 10,745.53 : x
  2. Step 2: Convert to fraction form
    18,139.01/27,201.62 = 10,745.53/x
  3. Step 3: Cross multiply
    18,139.01x = 27,201.62 × 10,745.53
  4. Step 4: Simplify right side
    18,139.01x = 292,295,782.62
  5. Step 5: Solve for x
    x = 292,295,782.62/18,139.01
  6. Step 6: Final answer
    x = 16,114.21

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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.