Home / 18,778.61-25,912.70-11,223.44

Finding the Fourth Proportional to 18,778.61, 25,912.70 and 11,223.44

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Solution

The fourth proportional to 18,778.61, 25,912.70 and 11,223.44 is: 15,487.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.61 : 25,912.70 = 11,223.44 : x
  2. Step 2: Convert to fraction form
    18,778.61/25,912.70 = 11,223.44/x
  3. Step 3: Cross multiply
    18,778.61x = 25,912.70 × 11,223.44
  4. Step 4: Simplify right side
    18,778.61x = 290,829,633.69
  5. Step 5: Solve for x
    x = 290,829,633.69/18,778.61
  6. Step 6: Final answer
    x = 15,487.28

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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.