Home / 28,220.59-38,906.29-18,131.84

Finding the Fourth Proportional to 28,220.59, 38,906.29 and 18,131.84

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Solution

The fourth proportional to 28,220.59, 38,906.29 and 18,131.84 is: 24,997.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.59 : 38,906.29 = 18,131.84 : x
  2. Step 2: Convert to fraction form
    28,220.59/38,906.29 = 18,131.84/x
  3. Step 3: Cross multiply
    28,220.59x = 38,906.29 × 18,131.84
  4. Step 4: Simplify right side
    28,220.59x = 705,442,625.27
  5. Step 5: Solve for x
    x = 705,442,625.27/28,220.59
  6. Step 6: Final answer
    x = 24,997.44

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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.