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Finding the Fourth Proportional to 18,136.88, 27,186.12 and 10,328.96

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Solution

The fourth proportional to 18,136.88, 27,186.12 and 10,328.96 is: 15,482.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,136.88 : 27,186.12 = 10,328.96 : x
  2. Step 2: Convert to fraction form
    18,136.88/27,186.12 = 10,328.96/x
  3. Step 3: Cross multiply
    18,136.88x = 27,186.12 × 10,328.96
  4. Step 4: Simplify right side
    18,136.88x = 280,804,346.04
  5. Step 5: Solve for x
    x = 280,804,346.04/18,136.88
  6. Step 6: Final answer
    x = 15,482.51

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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.