Home / 20,158.22-30,237.48-11,391.09

Finding the Fourth Proportional to 20,158.22, 30,237.48 and 11,391.09

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Solution

The fourth proportional to 20,158.22, 30,237.48 and 11,391.09 is: 17,086.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.22 : 30,237.48 = 11,391.09 : x
  2. Step 2: Convert to fraction form
    20,158.22/30,237.48 = 11,391.09/x
  3. Step 3: Cross multiply
    20,158.22x = 30,237.48 × 11,391.09
  4. Step 4: Simplify right side
    20,158.22x = 344,437,856.05
  5. Step 5: Solve for x
    x = 344,437,856.05/20,158.22
  6. Step 6: Final answer
    x = 17,086.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.