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Finding the Fourth Proportional to 18,270.99, 27,407.03 and 7,180.47

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Solution

The fourth proportional to 18,270.99, 27,407.03 and 7,180.47 is: 10,770.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.99 : 27,407.03 = 7,180.47 : x
  2. Step 2: Convert to fraction form
    18,270.99/27,407.03 = 7,180.47/x
  3. Step 3: Cross multiply
    18,270.99x = 27,407.03 × 7,180.47
  4. Step 4: Simplify right side
    18,270.99x = 196,795,320.80
  5. Step 5: Solve for x
    x = 196,795,320.80/18,270.99
  6. Step 6: Final answer
    x = 10,770.92

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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.