Home / 21,155.88-29,194.68-12,772.44

Finding the Fourth Proportional to 21,155.88, 29,194.68 and 12,772.44

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Solution

The fourth proportional to 21,155.88, 29,194.68 and 12,772.44 is: 17,625.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.88 : 29,194.68 = 12,772.44 : x
  2. Step 2: Convert to fraction form
    21,155.88/29,194.68 = 12,772.44/x
  3. Step 3: Cross multiply
    21,155.88x = 29,194.68 × 12,772.44
  4. Step 4: Simplify right side
    21,155.88x = 372,887,298.62
  5. Step 5: Solve for x
    x = 372,887,298.62/21,155.88
  6. Step 6: Final answer
    x = 17,625.70

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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.