Home / 20,264.32-27,942.72-13,177.60

Finding the Fourth Proportional to 20,264.32, 27,942.72 and 13,177.60

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Solution

The fourth proportional to 20,264.32, 27,942.72 and 13,177.60 is: 18,170.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,264.32 : 27,942.72 = 13,177.60 : x
  2. Step 2: Convert to fraction form
    20,264.32/27,942.72 = 13,177.60/x
  3. Step 3: Cross multiply
    20,264.32x = 27,942.72 × 13,177.60
  4. Step 4: Simplify right side
    20,264.32x = 368,217,987.07
  5. Step 5: Solve for x
    x = 368,217,987.07/20,264.32
  6. Step 6: Final answer
    x = 18,170.75

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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.