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Finding the Fourth Proportional to 14,250.50, 21,375.50 and 5,487.31

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Solution

The fourth proportional to 14,250.50, 21,375.50 and 5,487.31 is: 8,230.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,250.50 : 21,375.50 = 5,487.31 : x
  2. Step 2: Convert to fraction form
    14,250.50/21,375.50 = 5,487.31/x
  3. Step 3: Cross multiply
    14,250.50x = 21,375.50 × 5,487.31
  4. Step 4: Simplify right side
    14,250.50x = 117,293,888.03
  5. Step 5: Solve for x
    x = 117,293,888.03/14,250.50
  6. Step 6: Final answer
    x = 8,230.86

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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.