Home / 21,180.44-31,708.23-18,553.08

Finding the Fourth Proportional to 21,180.44, 31,708.23 and 18,553.08

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Solution

The fourth proportional to 21,180.44, 31,708.23 and 18,553.08 is: 27,774.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.44 : 31,708.23 = 18,553.08 : x
  2. Step 2: Convert to fraction form
    21,180.44/31,708.23 = 18,553.08/x
  3. Step 3: Cross multiply
    21,180.44x = 31,708.23 × 18,553.08
  4. Step 4: Simplify right side
    21,180.44x = 588,285,327.85
  5. Step 5: Solve for x
    x = 588,285,327.85/21,180.44
  6. Step 6: Final answer
    x = 27,774.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.