Home / 21,425.22-29,558.52-12,471.30

Finding the Fourth Proportional to 21,425.22, 29,558.52 and 12,471.30

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Solution

The fourth proportional to 21,425.22, 29,558.52 and 12,471.30 is: 17,205.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.22 : 29,558.52 = 12,471.30 : x
  2. Step 2: Convert to fraction form
    21,425.22/29,558.52 = 12,471.30/x
  3. Step 3: Cross multiply
    21,425.22x = 29,558.52 × 12,471.30
  4. Step 4: Simplify right side
    21,425.22x = 368,633,170.48
  5. Step 5: Solve for x
    x = 368,633,170.48/21,425.22
  6. Step 6: Final answer
    x = 17,205.57

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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.