Home / 18,989.28-26,201.20-11,027.38

Finding the Fourth Proportional to 18,989.28, 26,201.20 and 11,027.38

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Solution

The fourth proportional to 18,989.28, 26,201.20 and 11,027.38 is: 15,215.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.28 : 26,201.20 = 11,027.38 : x
  2. Step 2: Convert to fraction form
    18,989.28/26,201.20 = 11,027.38/x
  3. Step 3: Cross multiply
    18,989.28x = 26,201.20 × 11,027.38
  4. Step 4: Simplify right side
    18,989.28x = 288,930,588.86
  5. Step 5: Solve for x
    x = 288,930,588.86/18,989.28
  6. Step 6: Final answer
    x = 15,215.46

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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.