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Finding the Fourth Proportional to 18,507.66, 27,765.63 and 5,361.03

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Solution

The fourth proportional to 18,507.66, 27,765.63 and 5,361.03 is: 8,042.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,507.66 : 27,765.63 = 5,361.03 : x
  2. Step 2: Convert to fraction form
    18,507.66/27,765.63 = 5,361.03/x
  3. Step 3: Cross multiply
    18,507.66x = 27,765.63 × 5,361.03
  4. Step 4: Simplify right side
    18,507.66x = 148,852,375.40
  5. Step 5: Solve for x
    x = 148,852,375.40/18,507.66
  6. Step 6: Final answer
    x = 8,042.74

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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.