Home / 18,211.40-27,302.10-8,216.80

Finding the Fourth Proportional to 18,211.40, 27,302.10 and 8,216.80

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Solution

The fourth proportional to 18,211.40, 27,302.10 and 8,216.80 is: 12,318.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.40 : 27,302.10 = 8,216.80 : x
  2. Step 2: Convert to fraction form
    18,211.40/27,302.10 = 8,216.80/x
  3. Step 3: Cross multiply
    18,211.40x = 27,302.10 × 8,216.80
  4. Step 4: Simplify right side
    18,211.40x = 224,335,895.28
  5. Step 5: Solve for x
    x = 224,335,895.28/18,211.40
  6. Step 6: Final answer
    x = 12,318.43

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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.