Home / 11,910.16-16,456.44-11,489.68

Finding the Fourth Proportional to 11,910.16, 16,456.44 and 11,489.68

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Solution

The fourth proportional to 11,910.16, 16,456.44 and 11,489.68 is: 15,875.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,910.16 : 16,456.44 = 11,489.68 : x
  2. Step 2: Convert to fraction form
    11,910.16/16,456.44 = 11,489.68/x
  3. Step 3: Cross multiply
    11,910.16x = 16,456.44 × 11,489.68
  4. Step 4: Simplify right side
    11,910.16x = 189,079,229.54
  5. Step 5: Solve for x
    x = 189,079,229.54/11,910.16
  6. Step 6: Final answer
    x = 15,875.46

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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.