Home / 20,225.78-27,912.22-11,273.04

Finding the Fourth Proportional to 20,225.78, 27,912.22 and 11,273.04

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Solution

The fourth proportional to 20,225.78, 27,912.22 and 11,273.04 is: 15,557.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.78 : 27,912.22 = 11,273.04 : x
  2. Step 2: Convert to fraction form
    20,225.78/27,912.22 = 11,273.04/x
  3. Step 3: Cross multiply
    20,225.78x = 27,912.22 × 11,273.04
  4. Step 4: Simplify right side
    20,225.78x = 314,655,572.55
  5. Step 5: Solve for x
    x = 314,655,572.55/20,225.78
  6. Step 6: Final answer
    x = 15,557.15

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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.