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Finding the Fourth Proportional to 11,625.70, 17,445.98 and 4,229.45

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Solution

The fourth proportional to 11,625.70, 17,445.98 and 4,229.45 is: 6,346.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,625.70 : 17,445.98 = 4,229.45 : x
  2. Step 2: Convert to fraction form
    11,625.70/17,445.98 = 4,229.45/x
  3. Step 3: Cross multiply
    11,625.70x = 17,445.98 × 4,229.45
  4. Step 4: Simplify right side
    11,625.70x = 73,786,900.11
  5. Step 5: Solve for x
    x = 73,786,900.11/11,625.70
  6. Step 6: Final answer
    x = 6,346.88

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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.