Home / 21,201.86-29,256.40-12,252.25

Finding the Fourth Proportional to 21,201.86, 29,256.40 and 12,252.25

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Solution

The fourth proportional to 21,201.86, 29,256.40 and 12,252.25 is: 16,906.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.86 : 29,256.40 = 12,252.25 : x
  2. Step 2: Convert to fraction form
    21,201.86/29,256.40 = 12,252.25/x
  3. Step 3: Cross multiply
    21,201.86x = 29,256.40 × 12,252.25
  4. Step 4: Simplify right side
    21,201.86x = 358,456,778.79
  5. Step 5: Solve for x
    x = 358,456,778.79/21,201.86
  6. Step 6: Final answer
    x = 16,906.85

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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.