Home / 28,249.08-42,357.14-8,521.72

Finding the Fourth Proportional to 28,249.08, 42,357.14 and 8,521.72

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Solution

The fourth proportional to 28,249.08, 42,357.14 and 8,521.72 is: 12,777.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,249.08 : 42,357.14 = 8,521.72 : x
  2. Step 2: Convert to fraction form
    28,249.08/42,357.14 = 8,521.72/x
  3. Step 3: Cross multiply
    28,249.08x = 42,357.14 × 8,521.72
  4. Step 4: Simplify right side
    28,249.08x = 360,955,687.08
  5. Step 5: Solve for x
    x = 360,955,687.08/28,249.08
  6. Step 6: Final answer
    x = 12,777.61

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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.