Home / 21,761.82-30,029.22-12,330.36

Finding the Fourth Proportional to 21,761.82, 30,029.22 and 12,330.36

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Solution

The fourth proportional to 21,761.82, 30,029.22 and 12,330.36 is: 17,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,761.82 : 30,029.22 = 12,330.36 : x
  2. Step 2: Convert to fraction form
    21,761.82/30,029.22 = 12,330.36/x
  3. Step 3: Cross multiply
    21,761.82x = 30,029.22 × 12,330.36
  4. Step 4: Simplify right side
    21,761.82x = 370,271,093.12
  5. Step 5: Solve for x
    x = 370,271,093.12/21,761.82
  6. Step 6: Final answer
    x = 17,014.71

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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.