Home / 12,217.49-16,860.56-7,181.64

Finding the Fourth Proportional to 12,217.49, 16,860.56 and 7,181.64

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Solution

The fourth proportional to 12,217.49, 16,860.56 and 7,181.64 is: 9,910.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.49 : 16,860.56 = 7,181.64 : x
  2. Step 2: Convert to fraction form
    12,217.49/16,860.56 = 7,181.64/x
  3. Step 3: Cross multiply
    12,217.49x = 16,860.56 × 7,181.64
  4. Step 4: Simplify right side
    12,217.49x = 121,086,436.21
  5. Step 5: Solve for x
    x = 121,086,436.21/12,217.49
  6. Step 6: Final answer
    x = 9,910.91

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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.