Home / 20,462.82-28,238.49-11,388.03

Finding the Fourth Proportional to 20,462.82, 28,238.49 and 11,388.03

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Solution

The fourth proportional to 20,462.82, 28,238.49 and 11,388.03 is: 15,715.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,462.82 : 28,238.49 = 11,388.03 : x
  2. Step 2: Convert to fraction form
    20,462.82/28,238.49 = 11,388.03/x
  3. Step 3: Cross multiply
    20,462.82x = 28,238.49 × 11,388.03
  4. Step 4: Simplify right side
    20,462.82x = 321,580,792.63
  5. Step 5: Solve for x
    x = 321,580,792.63/20,462.82
  6. Step 6: Final answer
    x = 15,715.37

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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.