Home / 20,272.64-27,976.26-11,320.13

Finding the Fourth Proportional to 20,272.64, 27,976.26 and 11,320.13

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Solution

The fourth proportional to 20,272.64, 27,976.26 and 11,320.13 is: 15,621.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.64 : 27,976.26 = 11,320.13 : x
  2. Step 2: Convert to fraction form
    20,272.64/27,976.26 = 11,320.13/x
  3. Step 3: Cross multiply
    20,272.64x = 27,976.26 × 11,320.13
  4. Step 4: Simplify right side
    20,272.64x = 316,694,900.11
  5. Step 5: Solve for x
    x = 316,694,900.11/20,272.64
  6. Step 6: Final answer
    x = 15,621.79

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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.