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Finding the Fourth Proportional to 13,673.03, 18,868.77 and 7,704.72

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Solution

The fourth proportional to 13,673.03, 18,868.77 and 7,704.72 is: 10,632.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.03 : 18,868.77 = 7,704.72 : x
  2. Step 2: Convert to fraction form
    13,673.03/18,868.77 = 7,704.72/x
  3. Step 3: Cross multiply
    13,673.03x = 18,868.77 × 7,704.72
  4. Step 4: Simplify right side
    13,673.03x = 145,378,589.59
  5. Step 5: Solve for x
    x = 145,378,589.59/13,673.03
  6. Step 6: Final answer
    x = 10,632.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.