Home / 12,447.29-17,171.64-8,197.22

Finding the Fourth Proportional to 12,447.29, 17,171.64 and 8,197.22

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Solution

The fourth proportional to 12,447.29, 17,171.64 and 8,197.22 is: 11,308.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,447.29 : 17,171.64 = 8,197.22 : x
  2. Step 2: Convert to fraction form
    12,447.29/17,171.64 = 8,197.22/x
  3. Step 3: Cross multiply
    12,447.29x = 17,171.64 × 8,197.22
  4. Step 4: Simplify right side
    12,447.29x = 140,759,710.84
  5. Step 5: Solve for x
    x = 140,759,710.84/12,447.29
  6. Step 6: Final answer
    x = 11,308.46

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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.