Home / 20,023.99-27,638.87-13,222.97

Finding the Fourth Proportional to 20,023.99, 27,638.87 and 13,222.97

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Solution

The fourth proportional to 20,023.99, 27,638.87 and 13,222.97 is: 18,251.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,023.99 : 27,638.87 = 13,222.97 : x
  2. Step 2: Convert to fraction form
    20,023.99/27,638.87 = 13,222.97/x
  3. Step 3: Cross multiply
    20,023.99x = 27,638.87 × 13,222.97
  4. Step 4: Simplify right side
    20,023.99x = 365,467,744.53
  5. Step 5: Solve for x
    x = 365,467,744.53/20,023.99
  6. Step 6: Final answer
    x = 18,251.50

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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.