Home / 20,124.05-27,778.64-17,279.99

Finding the Fourth Proportional to 20,124.05, 27,778.64 and 17,279.99

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Solution

The fourth proportional to 20,124.05, 27,778.64 and 17,279.99 is: 23,852.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.05 : 27,778.64 = 17,279.99 : x
  2. Step 2: Convert to fraction form
    20,124.05/27,778.64 = 17,279.99/x
  3. Step 3: Cross multiply
    20,124.05x = 27,778.64 × 17,279.99
  4. Step 4: Simplify right side
    20,124.05x = 480,014,396.12
  5. Step 5: Solve for x
    x = 480,014,396.12/20,124.05
  6. Step 6: Final answer
    x = 23,852.78

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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.