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Finding the Fourth Proportional to 12,376.52, 17,079.60 and 7,408.52

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Solution

The fourth proportional to 12,376.52, 17,079.60 and 7,408.52 is: 10,223.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,376.52 : 17,079.60 = 7,408.52 : x
  2. Step 2: Convert to fraction form
    12,376.52/17,079.60 = 7,408.52/x
  3. Step 3: Cross multiply
    12,376.52x = 17,079.60 × 7,408.52
  4. Step 4: Simplify right side
    12,376.52x = 126,534,558.19
  5. Step 5: Solve for x
    x = 126,534,558.19/12,376.52
  6. Step 6: Final answer
    x = 10,223.76

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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.