Home / 15,883.26-21,921.52-8,811.96

Finding the Fourth Proportional to 15,883.26, 21,921.52 and 8,811.96

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Solution

The fourth proportional to 15,883.26, 21,921.52 and 8,811.96 is: 12,161.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,883.26 : 21,921.52 = 8,811.96 : x
  2. Step 2: Convert to fraction form
    15,883.26/21,921.52 = 8,811.96/x
  3. Step 3: Cross multiply
    15,883.26x = 21,921.52 × 8,811.96
  4. Step 4: Simplify right side
    15,883.26x = 193,171,403.71
  5. Step 5: Solve for x
    x = 193,171,403.71/15,883.26
  6. Step 6: Final answer
    x = 12,161.95

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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.