Home / 20,126.13-27,772.62-11,173.34

Finding the Fourth Proportional to 20,126.13, 27,772.62 and 11,173.34

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Solution

The fourth proportional to 20,126.13, 27,772.62 and 11,173.34 is: 15,418.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.13 : 27,772.62 = 11,173.34 : x
  2. Step 2: Convert to fraction form
    20,126.13/27,772.62 = 11,173.34/x
  3. Step 3: Cross multiply
    20,126.13x = 27,772.62 × 11,173.34
  4. Step 4: Simplify right side
    20,126.13x = 310,312,787.09
  5. Step 5: Solve for x
    x = 310,312,787.09/20,126.13
  6. Step 6: Final answer
    x = 15,418.40

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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.