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Finding the Fourth Proportional to 18,090.74, 27,136.17 and 9,328.22

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Solution

The fourth proportional to 18,090.74, 27,136.17 and 9,328.22 is: 13,992.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,090.74 : 27,136.17 = 9,328.22 : x
  2. Step 2: Convert to fraction form
    18,090.74/27,136.17 = 9,328.22/x
  3. Step 3: Cross multiply
    18,090.74x = 27,136.17 × 9,328.22
  4. Step 4: Simplify right side
    18,090.74x = 253,132,163.72
  5. Step 5: Solve for x
    x = 253,132,163.72/18,090.74
  6. Step 6: Final answer
    x = 13,992.36

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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.