Home / 20,174.10-27,840.87-11,222.70

Finding the Fourth Proportional to 20,174.10, 27,840.87 and 11,222.70

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Solution

The fourth proportional to 20,174.10, 27,840.87 and 11,222.70 is: 15,487.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,174.10 : 27,840.87 = 11,222.70 : x
  2. Step 2: Convert to fraction form
    20,174.10/27,840.87 = 11,222.70/x
  3. Step 3: Cross multiply
    20,174.10x = 27,840.87 × 11,222.70
  4. Step 4: Simplify right side
    20,174.10x = 312,449,731.75
  5. Step 5: Solve for x
    x = 312,449,731.75/20,174.10
  6. Step 6: Final answer
    x = 15,487.67

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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.