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Finding the Fourth Proportional to 18,894.36, 26,076.84 and 10,939.08

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Solution

The fourth proportional to 18,894.36, 26,076.84 and 10,939.08 is: 15,097.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,894.36 : 26,076.84 = 10,939.08 : x
  2. Step 2: Convert to fraction form
    18,894.36/26,076.84 = 10,939.08/x
  3. Step 3: Cross multiply
    18,894.36x = 26,076.84 × 10,939.08
  4. Step 4: Simplify right side
    18,894.36x = 285,256,638.91
  5. Step 5: Solve for x
    x = 285,256,638.91/18,894.36
  6. Step 6: Final answer
    x = 15,097.45

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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.