Home / 13,163.84-18,147.36-8,966.72

Finding the Fourth Proportional to 13,163.84, 18,147.36 and 8,966.72

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Solution

The fourth proportional to 13,163.84, 18,147.36 and 8,966.72 is: 12,361.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.84 : 18,147.36 = 8,966.72 : x
  2. Step 2: Convert to fraction form
    13,163.84/18,147.36 = 8,966.72/x
  3. Step 3: Cross multiply
    13,163.84x = 18,147.36 × 8,966.72
  4. Step 4: Simplify right side
    13,163.84x = 162,722,295.86
  5. Step 5: Solve for x
    x = 162,722,295.86/13,163.84
  6. Step 6: Final answer
    x = 12,361.31

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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.