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Finding the Fourth Proportional to 18,109.26, 27,158.62 and 7,013.47

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Solution

The fourth proportional to 18,109.26, 27,158.62 and 7,013.47 is: 10,518.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.26 : 27,158.62 = 7,013.47 : x
  2. Step 2: Convert to fraction form
    18,109.26/27,158.62 = 7,013.47/x
  3. Step 3: Cross multiply
    18,109.26x = 27,158.62 × 7,013.47
  4. Step 4: Simplify right side
    18,109.26x = 190,476,234.51
  5. Step 5: Solve for x
    x = 190,476,234.51/18,109.26
  6. Step 6: Final answer
    x = 10,518.17

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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.