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Finding the Fourth Proportional to 18,181.80, 27,240.30 and 15,589.80

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Solution

The fourth proportional to 18,181.80, 27,240.30 and 15,589.80 is: 23,356.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,181.80 : 27,240.30 = 15,589.80 : x
  2. Step 2: Convert to fraction form
    18,181.80/27,240.30 = 15,589.80/x
  3. Step 3: Cross multiply
    18,181.80x = 27,240.30 × 15,589.80
  4. Step 4: Simplify right side
    18,181.80x = 424,670,828.94
  5. Step 5: Solve for x
    x = 424,670,828.94/18,181.80
  6. Step 6: Final answer
    x = 23,356.92

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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.