Home / 13,608.48-18,781.75-8,306.37

Finding the Fourth Proportional to 13,608.48, 18,781.75 and 8,306.37

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Solution

The fourth proportional to 13,608.48, 18,781.75 and 8,306.37 is: 11,464.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.48 : 18,781.75 = 8,306.37 : x
  2. Step 2: Convert to fraction form
    13,608.48/18,781.75 = 8,306.37/x
  3. Step 3: Cross multiply
    13,608.48x = 18,781.75 × 8,306.37
  4. Step 4: Simplify right side
    13,608.48x = 156,008,123.22
  5. Step 5: Solve for x
    x = 156,008,123.22/13,608.48
  6. Step 6: Final answer
    x = 11,464.04

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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.