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Finding the Fourth Proportional to 18,447.80, 27,655.07 and 6,758.28

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Solution

The fourth proportional to 18,447.80, 27,655.07 and 6,758.28 is: 10,131.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.80 : 27,655.07 = 6,758.28 : x
  2. Step 2: Convert to fraction form
    18,447.80/27,655.07 = 6,758.28/x
  3. Step 3: Cross multiply
    18,447.80x = 27,655.07 × 6,758.28
  4. Step 4: Simplify right side
    18,447.80x = 186,900,672.69
  5. Step 5: Solve for x
    x = 186,900,672.69/18,447.80
  6. Step 6: Final answer
    x = 10,131.33

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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.