Home / 18,531.78-27,812.25-11,144.58

Finding the Fourth Proportional to 18,531.78, 27,812.25 and 11,144.58

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Solution

The fourth proportional to 18,531.78, 27,812.25 and 11,144.58 is: 16,725.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.78 : 27,812.25 = 11,144.58 : x
  2. Step 2: Convert to fraction form
    18,531.78/27,812.25 = 11,144.58/x
  3. Step 3: Cross multiply
    18,531.78x = 27,812.25 × 11,144.58
  4. Step 4: Simplify right side
    18,531.78x = 309,955,845.11
  5. Step 5: Solve for x
    x = 309,955,845.11/18,531.78
  6. Step 6: Final answer
    x = 16,725.64

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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.