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Finding the Fourth Proportional to 14,188.43, 21,295.78 and 7,173.43

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Solution

The fourth proportional to 14,188.43, 21,295.78 and 7,173.43 is: 10,766.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,188.43 : 21,295.78 = 7,173.43 : x
  2. Step 2: Convert to fraction form
    14,188.43/21,295.78 = 7,173.43/x
  3. Step 3: Cross multiply
    14,188.43x = 21,295.78 × 7,173.43
  4. Step 4: Simplify right side
    14,188.43x = 152,763,715.95
  5. Step 5: Solve for x
    x = 152,763,715.95/14,188.43
  6. Step 6: Final answer
    x = 10,766.78

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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.