Home / 13,487.31-20,201.49-11,120.73

Finding the Fourth Proportional to 13,487.31, 20,201.49 and 11,120.73

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Solution

The fourth proportional to 13,487.31, 20,201.49 and 11,120.73 is: 16,656.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.31 : 20,201.49 = 11,120.73 : x
  2. Step 2: Convert to fraction form
    13,487.31/20,201.49 = 11,120.73/x
  3. Step 3: Cross multiply
    13,487.31x = 20,201.49 × 11,120.73
  4. Step 4: Simplify right side
    13,487.31x = 224,655,315.89
  5. Step 5: Solve for x
    x = 224,655,315.89/13,487.31
  6. Step 6: Final answer
    x = 16,656.79

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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.