Home / 20,171.28-27,820.62-13,801.67

Finding the Fourth Proportional to 20,171.28, 27,820.62 and 13,801.67

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Solution

The fourth proportional to 20,171.28, 27,820.62 and 13,801.67 is: 19,035.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.28 : 27,820.62 = 13,801.67 : x
  2. Step 2: Convert to fraction form
    20,171.28/27,820.62 = 13,801.67/x
  3. Step 3: Cross multiply
    20,171.28x = 27,820.62 × 13,801.67
  4. Step 4: Simplify right side
    20,171.28x = 383,970,877.33
  5. Step 5: Solve for x
    x = 383,970,877.33/20,171.28
  6. Step 6: Final answer
    x = 19,035.52

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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.