Home / 20,272.14-27,975.57-11,319.63

Finding the Fourth Proportional to 20,272.14, 27,975.57 and 11,319.63

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Solution

The fourth proportional to 20,272.14, 27,975.57 and 11,319.63 is: 15,621.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.14 : 27,975.57 = 11,319.63 : x
  2. Step 2: Convert to fraction form
    20,272.14/27,975.57 = 11,319.63/x
  3. Step 3: Cross multiply
    20,272.14x = 27,975.57 × 11,319.63
  4. Step 4: Simplify right side
    20,272.14x = 316,673,101.44
  5. Step 5: Solve for x
    x = 316,673,101.44/20,272.14
  6. Step 6: Final answer
    x = 15,621.10

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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.