Home / 21,771.22-30,044.64-12,339.58

Finding the Fourth Proportional to 21,771.22, 30,044.64 and 12,339.58

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Solution

The fourth proportional to 21,771.22, 30,044.64 and 12,339.58 is: 17,028.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.22 : 30,044.64 = 12,339.58 : x
  2. Step 2: Convert to fraction form
    21,771.22/30,044.64 = 12,339.58/x
  3. Step 3: Cross multiply
    21,771.22x = 30,044.64 × 12,339.58
  4. Step 4: Simplify right side
    21,771.22x = 370,738,238.85
  5. Step 5: Solve for x
    x = 370,738,238.85/21,771.22
  6. Step 6: Final answer
    x = 17,028.82

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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.