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Finding the Fourth Proportional to 12,435.21, 17,160.48 and 6,846.21

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Solution

The fourth proportional to 12,435.21, 17,160.48 and 6,846.21 is: 9,447.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,435.21 : 17,160.48 = 6,846.21 : x
  2. Step 2: Convert to fraction form
    12,435.21/17,160.48 = 6,846.21/x
  3. Step 3: Cross multiply
    12,435.21x = 17,160.48 × 6,846.21
  4. Step 4: Simplify right side
    12,435.21x = 117,484,249.78
  5. Step 5: Solve for x
    x = 117,484,249.78/12,435.21
  6. Step 6: Final answer
    x = 9,447.71

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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.