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Finding the Fourth Proportional to 12,237.48, 18,355.59 and 7,174.48

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Solution

The fourth proportional to 12,237.48, 18,355.59 and 7,174.48 is: 10,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,237.48 : 18,355.59 = 7,174.48 : x
  2. Step 2: Convert to fraction form
    12,237.48/18,355.59 = 7,174.48/x
  3. Step 3: Cross multiply
    12,237.48x = 18,355.59 × 7,174.48
  4. Step 4: Simplify right side
    12,237.48x = 131,691,801.87
  5. Step 5: Solve for x
    x = 131,691,801.87/12,237.48
  6. Step 6: Final answer
    x = 10,761.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.