Home / 20,124.19-27,770.07-11,171.26

Finding the Fourth Proportional to 20,124.19, 27,770.07 and 11,171.26

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Solution

The fourth proportional to 20,124.19, 27,770.07 and 11,171.26 is: 15,415.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.19 : 27,770.07 = 11,171.26 : x
  2. Step 2: Convert to fraction form
    20,124.19/27,770.07 = 11,171.26/x
  3. Step 3: Cross multiply
    20,124.19x = 27,770.07 × 11,171.26
  4. Step 4: Simplify right side
    20,124.19x = 310,226,672.19
  5. Step 5: Solve for x
    x = 310,226,672.19/20,124.19
  6. Step 6: Final answer
    x = 15,415.61

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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.