Home / 23,179.64-31,992.44-15,221.66

Finding the Fourth Proportional to 23,179.64, 31,992.44 and 15,221.66

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Solution

The fourth proportional to 23,179.64, 31,992.44 and 15,221.66 is: 21,008.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,179.64 : 31,992.44 = 15,221.66 : x
  2. Step 2: Convert to fraction form
    23,179.64/31,992.44 = 15,221.66/x
  3. Step 3: Cross multiply
    23,179.64x = 31,992.44 × 15,221.66
  4. Step 4: Simplify right side
    23,179.64x = 486,977,808.18
  5. Step 5: Solve for x
    x = 486,977,808.18/23,179.64
  6. Step 6: Final answer
    x = 21,008.86

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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.