Home / 15,546.72-21,453.48-8,831.82

Finding the Fourth Proportional to 15,546.72, 21,453.48 and 8,831.82

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Solution

The fourth proportional to 15,546.72, 21,453.48 and 8,831.82 is: 12,187.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,546.72 : 21,453.48 = 8,831.82 : x
  2. Step 2: Convert to fraction form
    15,546.72/21,453.48 = 8,831.82/x
  3. Step 3: Cross multiply
    15,546.72x = 21,453.48 × 8,831.82
  4. Step 4: Simplify right side
    15,546.72x = 189,473,273.73
  5. Step 5: Solve for x
    x = 189,473,273.73/15,546.72
  6. Step 6: Final answer
    x = 12,187.35

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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.