Home / 20,121.19-27,765.93-11,168.26

Finding the Fourth Proportional to 20,121.19, 27,765.93 and 11,168.26

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Solution

The fourth proportional to 20,121.19, 27,765.93 and 11,168.26 is: 15,411.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.19 : 27,765.93 = 11,168.26 : x
  2. Step 2: Convert to fraction form
    20,121.19/27,765.93 = 11,168.26/x
  3. Step 3: Cross multiply
    20,121.19x = 27,765.93 × 11,168.26
  4. Step 4: Simplify right side
    20,121.19x = 310,097,125.38
  5. Step 5: Solve for x
    x = 310,097,125.38/20,121.19
  6. Step 6: Final answer
    x = 15,411.47

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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.