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Finding the Fourth Proportional to 18,615.36, 27,926.04 and 6,131.76

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Solution

The fourth proportional to 18,615.36, 27,926.04 and 6,131.76 is: 9,198.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.36 : 27,926.04 = 6,131.76 : x
  2. Step 2: Convert to fraction form
    18,615.36/27,926.04 = 6,131.76/x
  3. Step 3: Cross multiply
    18,615.36x = 27,926.04 × 6,131.76
  4. Step 4: Simplify right side
    18,615.36x = 171,235,775.03
  5. Step 5: Solve for x
    x = 171,235,775.03/18,615.36
  6. Step 6: Final answer
    x = 9,198.63

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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.