Home / 21,212.12-31,818.74-11,846.92

Finding the Fourth Proportional to 21,212.12, 31,818.74 and 11,846.92

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Solution

The fourth proportional to 21,212.12, 31,818.74 and 11,846.92 is: 17,770.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.12 : 31,818.74 = 11,846.92 : x
  2. Step 2: Convert to fraction form
    21,212.12/31,818.74 = 11,846.92/x
  3. Step 3: Cross multiply
    21,212.12x = 31,818.74 × 11,846.92
  4. Step 4: Simplify right side
    21,212.12x = 376,954,067.28
  5. Step 5: Solve for x
    x = 376,954,067.28/21,212.12
  6. Step 6: Final answer
    x = 17,770.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.