Home / 21,759.88-30,031.12-12,202.36

Finding the Fourth Proportional to 21,759.88, 30,031.12 and 12,202.36

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Solution

The fourth proportional to 21,759.88, 30,031.12 and 12,202.36 is: 16,840.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,759.88 : 30,031.12 = 12,202.36 : x
  2. Step 2: Convert to fraction form
    21,759.88/30,031.12 = 12,202.36/x
  3. Step 3: Cross multiply
    21,759.88x = 30,031.12 × 12,202.36
  4. Step 4: Simplify right side
    21,759.88x = 366,450,537.44
  5. Step 5: Solve for x
    x = 366,450,537.44/21,759.88
  6. Step 6: Final answer
    x = 16,840.65

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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.