Home / 21,611.44-29,822.76-12,179.68

Finding the Fourth Proportional to 21,611.44, 29,822.76 and 12,179.68

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Solution

The fourth proportional to 21,611.44, 29,822.76 and 12,179.68 is: 16,807.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.44 : 29,822.76 = 12,179.68 : x
  2. Step 2: Convert to fraction form
    21,611.44/29,822.76 = 12,179.68/x
  3. Step 3: Cross multiply
    21,611.44x = 29,822.76 × 12,179.68
  4. Step 4: Simplify right side
    21,611.44x = 363,231,673.52
  5. Step 5: Solve for x
    x = 363,231,673.52/21,611.44
  6. Step 6: Final answer
    x = 16,807.38

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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.