Home / 20,188.26-27,859.34-11,235.21

Finding the Fourth Proportional to 20,188.26, 27,859.34 and 11,235.21

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Solution

The fourth proportional to 20,188.26, 27,859.34 and 11,235.21 is: 15,504.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.26 : 27,859.34 = 11,235.21 : x
  2. Step 2: Convert to fraction form
    20,188.26/27,859.34 = 11,235.21/x
  3. Step 3: Cross multiply
    20,188.26x = 27,859.34 × 11,235.21
  4. Step 4: Simplify right side
    20,188.26x = 313,005,479.19
  5. Step 5: Solve for x
    x = 313,005,479.19/20,188.26
  6. Step 6: Final answer
    x = 15,504.33

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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.