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Finding the Fourth Proportional to 18,844.92, 26,009.46 and 12,129.48

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Solution

The fourth proportional to 18,844.92, 26,009.46 and 12,129.48 is: 16,740.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,844.92 : 26,009.46 = 12,129.48 : x
  2. Step 2: Convert to fraction form
    18,844.92/26,009.46 = 12,129.48/x
  3. Step 3: Cross multiply
    18,844.92x = 26,009.46 × 12,129.48
  4. Step 4: Simplify right side
    18,844.92x = 315,481,224.88
  5. Step 5: Solve for x
    x = 315,481,224.88/18,844.92
  6. Step 6: Final answer
    x = 16,740.92

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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.