Home / 28,821.78-43,231.86-15,756.90

Finding the Fourth Proportional to 28,821.78, 43,231.86 and 15,756.90

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Solution

The fourth proportional to 28,821.78, 43,231.86 and 15,756.90 is: 23,634.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,821.78 : 43,231.86 = 15,756.90 : x
  2. Step 2: Convert to fraction form
    28,821.78/43,231.86 = 15,756.90/x
  3. Step 3: Cross multiply
    28,821.78x = 43,231.86 × 15,756.90
  4. Step 4: Simplify right side
    28,821.78x = 681,200,094.83
  5. Step 5: Solve for x
    x = 681,200,094.83/28,821.78
  6. Step 6: Final answer
    x = 23,634.91

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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.