Home / 28,898.88-43,357.07-20,481.67

Finding the Fourth Proportional to 28,898.88, 43,357.07 and 20,481.67

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Solution

The fourth proportional to 28,898.88, 43,357.07 and 20,481.67 is: 30,728.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,898.88 : 43,357.07 = 20,481.67 : x
  2. Step 2: Convert to fraction form
    28,898.88/43,357.07 = 20,481.67/x
  3. Step 3: Cross multiply
    28,898.88x = 43,357.07 × 20,481.67
  4. Step 4: Simplify right side
    28,898.88x = 888,024,989.11
  5. Step 5: Solve for x
    x = 888,024,989.11/28,898.88
  6. Step 6: Final answer
    x = 30,728.70

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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.