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Finding the Fourth Proportional to 18,655.26, 27,982.90 and 5,507.42

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Solution

The fourth proportional to 18,655.26, 27,982.90 and 5,507.42 is: 8,261.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.26 : 27,982.90 = 5,507.42 : x
  2. Step 2: Convert to fraction form
    18,655.26/27,982.90 = 5,507.42/x
  3. Step 3: Cross multiply
    18,655.26x = 27,982.90 × 5,507.42
  4. Step 4: Simplify right side
    18,655.26x = 154,113,583.12
  5. Step 5: Solve for x
    x = 154,113,583.12/18,655.26
  6. Step 6: Final answer
    x = 8,261.13

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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.