Home / 20,174.10-27,840.41-11,221.71

Finding the Fourth Proportional to 20,174.10, 27,840.41 and 11,221.71

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Solution

The fourth proportional to 20,174.10, 27,840.41 and 11,221.71 is: 15,486.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,174.10 : 27,840.41 = 11,221.71 : x
  2. Step 2: Convert to fraction form
    20,174.10/27,840.41 = 11,221.71/x
  3. Step 3: Cross multiply
    20,174.10x = 27,840.41 × 11,221.71
  4. Step 4: Simplify right side
    20,174.10x = 312,417,007.30
  5. Step 5: Solve for x
    x = 312,417,007.30/20,174.10
  6. Step 6: Final answer
    x = 15,486.04

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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.