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Finding the Fourth Proportional to 18,312.60, 27,472.14 and 7,223.70

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Solution

The fourth proportional to 18,312.60, 27,472.14 and 7,223.70 is: 10,836.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.60 : 27,472.14 = 7,223.70 : x
  2. Step 2: Convert to fraction form
    18,312.60/27,472.14 = 7,223.70/x
  3. Step 3: Cross multiply
    18,312.60x = 27,472.14 × 7,223.70
  4. Step 4: Simplify right side
    18,312.60x = 198,450,497.72
  5. Step 5: Solve for x
    x = 198,450,497.72/18,312.60
  6. Step 6: Final answer
    x = 10,836.83

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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.