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Finding the Fourth Proportional to 18,279.15, 27,413.14 and 7,748.97

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Solution

The fourth proportional to 18,279.15, 27,413.14 and 7,748.97 is: 11,621.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.15 : 27,413.14 = 7,748.97 : x
  2. Step 2: Convert to fraction form
    18,279.15/27,413.14 = 7,748.97/x
  3. Step 3: Cross multiply
    18,279.15x = 27,413.14 × 7,748.97
  4. Step 4: Simplify right side
    18,279.15x = 212,423,599.47
  5. Step 5: Solve for x
    x = 212,423,599.47/18,279.15
  6. Step 6: Final answer
    x = 11,621.09

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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.