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Finding the Fourth Proportional to 11,908.18, 17,809.80 and 10,601.20

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Solution

The fourth proportional to 11,908.18, 17,809.80 and 10,601.20 is: 15,855.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,908.18 : 17,809.80 = 10,601.20 : x
  2. Step 2: Convert to fraction form
    11,908.18/17,809.80 = 10,601.20/x
  3. Step 3: Cross multiply
    11,908.18x = 17,809.80 × 10,601.20
  4. Step 4: Simplify right side
    11,908.18x = 188,805,251.76
  5. Step 5: Solve for x
    x = 188,805,251.76/11,908.18
  6. Step 6: Final answer
    x = 15,855.09

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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.