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Finding the Fourth Proportional to 13,755.32, 20,632.83 and 7,194.32

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Solution

The fourth proportional to 13,755.32, 20,632.83 and 7,194.32 is: 10,791.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.32 : 20,632.83 = 7,194.32 : x
  2. Step 2: Convert to fraction form
    13,755.32/20,632.83 = 7,194.32/x
  3. Step 3: Cross multiply
    13,755.32x = 20,632.83 × 7,194.32
  4. Step 4: Simplify right side
    13,755.32x = 148,439,128.76
  5. Step 5: Solve for x
    x = 148,439,128.76/13,755.32
  6. Step 6: Final answer
    x = 10,791.40

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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.