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Finding the Fourth Proportional to 18,438.57, 27,608.64 and 9,655.02

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Solution

The fourth proportional to 18,438.57, 27,608.64 and 9,655.02 is: 14,456.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.57 : 27,608.64 = 9,655.02 : x
  2. Step 2: Convert to fraction form
    18,438.57/27,608.64 = 9,655.02/x
  3. Step 3: Cross multiply
    18,438.57x = 27,608.64 × 9,655.02
  4. Step 4: Simplify right side
    18,438.57x = 266,561,833.33
  5. Step 5: Solve for x
    x = 266,561,833.33/18,438.57
  6. Step 6: Final answer
    x = 14,456.76

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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.