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Finding the Fourth Proportional to 12,343.78, 17,011.92 and 10,910.08

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Solution

The fourth proportional to 12,343.78, 17,011.92 and 10,910.08 is: 15,036.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.78 : 17,011.92 = 10,910.08 : x
  2. Step 2: Convert to fraction form
    12,343.78/17,011.92 = 10,910.08/x
  3. Step 3: Cross multiply
    12,343.78x = 17,011.92 × 10,910.08
  4. Step 4: Simplify right side
    12,343.78x = 185,601,408.15
  5. Step 5: Solve for x
    x = 185,601,408.15/12,343.78
  6. Step 6: Final answer
    x = 15,036.03

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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.