Home / 15,211.14-20,993.49-8,925.54

Finding the Fourth Proportional to 15,211.14, 20,993.49 and 8,925.54

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Solution

The fourth proportional to 15,211.14, 20,993.49 and 8,925.54 is: 12,318.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.14 : 20,993.49 = 8,925.54 : x
  2. Step 2: Convert to fraction form
    15,211.14/20,993.49 = 8,925.54/x
  3. Step 3: Cross multiply
    15,211.14x = 20,993.49 × 8,925.54
  4. Step 4: Simplify right side
    15,211.14x = 187,378,234.73
  5. Step 5: Solve for x
    x = 187,378,234.73/15,211.14
  6. Step 6: Final answer
    x = 12,318.49

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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.