Home / 28,481.87-39,249.47-20,509.04

Finding the Fourth Proportional to 28,481.87, 39,249.47 and 20,509.04

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Solution

The fourth proportional to 28,481.87, 39,249.47 and 20,509.04 is: 28,262.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,481.87 : 39,249.47 = 20,509.04 : x
  2. Step 2: Convert to fraction form
    28,481.87/39,249.47 = 20,509.04/x
  3. Step 3: Cross multiply
    28,481.87x = 39,249.47 × 20,509.04
  4. Step 4: Simplify right side
    28,481.87x = 804,968,651.42
  5. Step 5: Solve for x
    x = 804,968,651.42/28,481.87
  6. Step 6: Final answer
    x = 28,262.50

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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.