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Finding the Fourth Proportional to 18,112.69, 27,154.41 and 7,013.71

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Solution

The fourth proportional to 18,112.69, 27,154.41 and 7,013.71 is: 10,514.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,112.69 : 27,154.41 = 7,013.71 : x
  2. Step 2: Convert to fraction form
    18,112.69/27,154.41 = 7,013.71/x
  3. Step 3: Cross multiply
    18,112.69x = 27,154.41 × 7,013.71
  4. Step 4: Simplify right side
    18,112.69x = 190,453,156.96
  5. Step 5: Solve for x
    x = 190,453,156.96/18,112.69
  6. Step 6: Final answer
    x = 10,514.90

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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.