Home / 28,820.78-43,230.36-15,755.90

Finding the Fourth Proportional to 28,820.78, 43,230.36 and 15,755.90

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Solution

The fourth proportional to 28,820.78, 43,230.36 and 15,755.90 is: 23,633.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.78 : 43,230.36 = 15,755.90 : x
  2. Step 2: Convert to fraction form
    28,820.78/43,230.36 = 15,755.90/x
  3. Step 3: Cross multiply
    28,820.78x = 43,230.36 × 15,755.90
  4. Step 4: Simplify right side
    28,820.78x = 681,133,229.12
  5. Step 5: Solve for x
    x = 681,133,229.12/28,820.78
  6. Step 6: Final answer
    x = 23,633.41

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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.