Home / 13,671.44-18,868.32-7,704.57

Finding the Fourth Proportional to 13,671.44, 18,868.32 and 7,704.57

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Solution

The fourth proportional to 13,671.44, 18,868.32 and 7,704.57 is: 10,633.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.44 : 18,868.32 = 7,704.57 : x
  2. Step 2: Convert to fraction form
    13,671.44/18,868.32 = 7,704.57/x
  3. Step 3: Cross multiply
    13,671.44x = 18,868.32 × 7,704.57
  4. Step 4: Simplify right side
    13,671.44x = 145,372,292.22
  5. Step 5: Solve for x
    x = 145,372,292.22/13,671.44
  6. Step 6: Final answer
    x = 10,633.29

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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.