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Finding the Fourth Proportional to 13,722.62, 20,562.06 and 8,788.20

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Solution

The fourth proportional to 13,722.62, 20,562.06 and 8,788.20 is: 13,168.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.62 : 20,562.06 = 8,788.20 : x
  2. Step 2: Convert to fraction form
    13,722.62/20,562.06 = 8,788.20/x
  3. Step 3: Cross multiply
    13,722.62x = 20,562.06 × 8,788.20
  4. Step 4: Simplify right side
    13,722.62x = 180,703,495.69
  5. Step 5: Solve for x
    x = 180,703,495.69/13,722.62
  6. Step 6: Final answer
    x = 13,168.29

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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.