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Finding the Fourth Proportional to 18,717.48, 25,843.14 and 11,647.08

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Solution

The fourth proportional to 18,717.48, 25,843.14 and 11,647.08 is: 16,081.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.48 : 25,843.14 = 11,647.08 : x
  2. Step 2: Convert to fraction form
    18,717.48/25,843.14 = 11,647.08/x
  3. Step 3: Cross multiply
    18,717.48x = 25,843.14 × 11,647.08
  4. Step 4: Simplify right side
    18,717.48x = 300,997,119.03
  5. Step 5: Solve for x
    x = 300,997,119.03/18,717.48
  6. Step 6: Final answer
    x = 16,081.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.