Home / 12,438.07-17,163.97-6,772.80

Finding the Fourth Proportional to 12,438.07, 17,163.97 and 6,772.80

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Solution

The fourth proportional to 12,438.07, 17,163.97 and 6,772.80 is: 9,346.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.07 : 17,163.97 = 6,772.80 : x
  2. Step 2: Convert to fraction form
    12,438.07/17,163.97 = 6,772.80/x
  3. Step 3: Cross multiply
    12,438.07x = 17,163.97 × 6,772.80
  4. Step 4: Simplify right side
    12,438.07x = 116,248,086.90
  5. Step 5: Solve for x
    x = 116,248,086.90/12,438.07
  6. Step 6: Final answer
    x = 9,346.15

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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.