Home / 20,272.26-27,975.38-11,319.88

Finding the Fourth Proportional to 20,272.26, 27,975.38 and 11,319.88

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Solution

The fourth proportional to 20,272.26, 27,975.38 and 11,319.88 is: 15,621.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.26 : 27,975.38 = 11,319.88 : x
  2. Step 2: Convert to fraction form
    20,272.26/27,975.38 = 11,319.88/x
  3. Step 3: Cross multiply
    20,272.26x = 27,975.38 × 11,319.88
  4. Step 4: Simplify right side
    20,272.26x = 316,677,944.55
  5. Step 5: Solve for x
    x = 316,677,944.55/20,272.26
  6. Step 6: Final answer
    x = 15,621.25

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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.