Home / 18,747.34-28,121.51-8,211.94

Finding the Fourth Proportional to 18,747.34, 28,121.51 and 8,211.94

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Solution

The fourth proportional to 18,747.34, 28,121.51 and 8,211.94 is: 12,318.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.34 : 28,121.51 = 8,211.94 : x
  2. Step 2: Convert to fraction form
    18,747.34/28,121.51 = 8,211.94/x
  3. Step 3: Cross multiply
    18,747.34x = 28,121.51 × 8,211.94
  4. Step 4: Simplify right side
    18,747.34x = 230,932,103.06
  5. Step 5: Solve for x
    x = 230,932,103.06/18,747.34
  6. Step 6: Final answer
    x = 12,318.13

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1.5x scale

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.