Home / 28,198.76-42,290.58-8,472.92

Finding the Fourth Proportional to 28,198.76, 42,290.58 and 8,472.92

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Solution

The fourth proportional to 28,198.76, 42,290.58 and 8,472.92 is: 12,707.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.76 : 42,290.58 = 8,472.92 : x
  2. Step 2: Convert to fraction form
    28,198.76/42,290.58 = 8,472.92/x
  3. Step 3: Cross multiply
    28,198.76x = 42,290.58 × 8,472.92
  4. Step 4: Simplify right side
    28,198.76x = 358,324,701.09
  5. Step 5: Solve for x
    x = 358,324,701.09/28,198.76
  6. Step 6: Final answer
    x = 12,707.11

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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.