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Finding the Fourth Proportional to 18,291.52, 27,436.67 and 7,754.77

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Solution

The fourth proportional to 18,291.52, 27,436.67 and 7,754.77 is: 11,631.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.52 : 27,436.67 = 7,754.77 : x
  2. Step 2: Convert to fraction form
    18,291.52/27,436.67 = 7,754.77/x
  3. Step 3: Cross multiply
    18,291.52x = 27,436.67 × 7,754.77
  4. Step 4: Simplify right side
    18,291.52x = 212,764,947.62
  5. Step 5: Solve for x
    x = 212,764,947.62/18,291.52
  6. Step 6: Final answer
    x = 11,631.89

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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.