Home / 15,811.56-21,789.99-11,327.61

Finding the Fourth Proportional to 15,811.56, 21,789.99 and 11,327.61

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Solution

The fourth proportional to 15,811.56, 21,789.99 and 11,327.61 is: 15,610.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,811.56 : 21,789.99 = 11,327.61 : x
  2. Step 2: Convert to fraction form
    15,811.56/21,789.99 = 11,327.61/x
  3. Step 3: Cross multiply
    15,811.56x = 21,789.99 × 11,327.61
  4. Step 4: Simplify right side
    15,811.56x = 246,828,508.62
  5. Step 5: Solve for x
    x = 246,828,508.62/15,811.56
  6. Step 6: Final answer
    x = 15,610.64

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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.