Home / 20,272.11-27,975.24-11,319.77

Finding the Fourth Proportional to 20,272.11, 27,975.24 and 11,319.77

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Solution

The fourth proportional to 20,272.11, 27,975.24 and 11,319.77 is: 15,621.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.11 : 27,975.24 = 11,319.77 : x
  2. Step 2: Convert to fraction form
    20,272.11/27,975.24 = 11,319.77/x
  3. Step 3: Cross multiply
    20,272.11x = 27,975.24 × 11,319.77
  4. Step 4: Simplify right side
    20,272.11x = 316,673,142.62
  5. Step 5: Solve for x
    x = 316,673,142.62/20,272.11
  6. Step 6: Final answer
    x = 15,621.12

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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.