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Finding the Fourth Proportional to 13,755.74, 20,633.43 and 4,395.63

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Solution

The fourth proportional to 13,755.74, 20,633.43 and 4,395.63 is: 6,593.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.74 : 20,633.43 = 4,395.63 : x
  2. Step 2: Convert to fraction form
    13,755.74/20,633.43 = 4,395.63/x
  3. Step 3: Cross multiply
    13,755.74x = 20,633.43 × 4,395.63
  4. Step 4: Simplify right side
    13,755.74x = 90,696,923.91
  5. Step 5: Solve for x
    x = 90,696,923.91/13,755.74
  6. Step 6: Final answer
    x = 6,593.39

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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.