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Finding the Fourth Proportional to 13,446.70, 20,170.05 and 9,558.70

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Solution

The fourth proportional to 13,446.70, 20,170.05 and 9,558.70 is: 14,338.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.70 : 20,170.05 = 9,558.70 : x
  2. Step 2: Convert to fraction form
    13,446.70/20,170.05 = 9,558.70/x
  3. Step 3: Cross multiply
    13,446.70x = 20,170.05 × 9,558.70
  4. Step 4: Simplify right side
    13,446.70x = 192,799,456.94
  5. Step 5: Solve for x
    x = 192,799,456.94/13,446.70
  6. Step 6: Final answer
    x = 14,338.05

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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.