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Finding the Fourth Proportional to 12,408.13, 17,124.67 and 7,372.39

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Solution

The fourth proportional to 12,408.13, 17,124.67 and 7,372.39 is: 10,174.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.13 : 17,124.67 = 7,372.39 : x
  2. Step 2: Convert to fraction form
    12,408.13/17,124.67 = 7,372.39/x
  3. Step 3: Cross multiply
    12,408.13x = 17,124.67 × 7,372.39
  4. Step 4: Simplify right side
    12,408.13x = 126,249,712.27
  5. Step 5: Solve for x
    x = 126,249,712.27/12,408.13
  6. Step 6: Final answer
    x = 10,174.76

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Double scale
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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.