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Finding the Fourth Proportional to 18,081.78, 24,955.74 and 13,824.65

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Solution

The fourth proportional to 18,081.78, 24,955.74 and 13,824.65 is: 19,080.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,081.78 : 24,955.74 = 13,824.65 : x
  2. Step 2: Convert to fraction form
    18,081.78/24,955.74 = 13,824.65/x
  3. Step 3: Cross multiply
    18,081.78x = 24,955.74 × 13,824.65
  4. Step 4: Simplify right side
    18,081.78x = 345,004,246.21
  5. Step 5: Solve for x
    x = 345,004,246.21/18,081.78
  6. Step 6: Final answer
    x = 19,080.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.