Home / 21,217.44-29,278.32-11,785.76

Finding the Fourth Proportional to 21,217.44, 29,278.32 and 11,785.76

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Solution

The fourth proportional to 21,217.44, 29,278.32 and 11,785.76 is: 16,263.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.44 : 29,278.32 = 11,785.76 : x
  2. Step 2: Convert to fraction form
    21,217.44/29,278.32 = 11,785.76/x
  3. Step 3: Cross multiply
    21,217.44x = 29,278.32 × 11,785.76
  4. Step 4: Simplify right side
    21,217.44x = 345,067,252.72
  5. Step 5: Solve for x
    x = 345,067,252.72/21,217.44
  6. Step 6: Final answer
    x = 16,263.38

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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.