Home / 12,221.10-16,864.07-7,185.53

Finding the Fourth Proportional to 12,221.10, 16,864.07 and 7,185.53

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Solution

The fourth proportional to 12,221.10, 16,864.07 and 7,185.53 is: 9,915.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.10 : 16,864.07 = 7,185.53 : x
  2. Step 2: Convert to fraction form
    12,221.10/16,864.07 = 7,185.53/x
  3. Step 3: Cross multiply
    12,221.10x = 16,864.07 × 7,185.53
  4. Step 4: Simplify right side
    12,221.10x = 121,177,160.66
  5. Step 5: Solve for x
    x = 121,177,160.66/12,221.10
  6. Step 6: Final answer
    x = 9,915.41

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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.