Home / 12,398.43-18,629.85-11,588.54

Finding the Fourth Proportional to 12,398.43, 18,629.85 and 11,588.54

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Solution

The fourth proportional to 12,398.43, 18,629.85 and 11,588.54 is: 17,412.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.43 : 18,629.85 = 11,588.54 : x
  2. Step 2: Convert to fraction form
    12,398.43/18,629.85 = 11,588.54/x
  3. Step 3: Cross multiply
    12,398.43x = 18,629.85 × 11,588.54
  4. Step 4: Simplify right side
    12,398.43x = 215,892,761.92
  5. Step 5: Solve for x
    x = 215,892,761.92/12,398.43
  6. Step 6: Final answer
    x = 17,412.91

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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.