Home / 20,287.57-27,996.32-11,335.14

Finding the Fourth Proportional to 20,287.57, 27,996.32 and 11,335.14

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Solution

The fourth proportional to 20,287.57, 27,996.32 and 11,335.14 is: 15,642.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.57 : 27,996.32 = 11,335.14 : x
  2. Step 2: Convert to fraction form
    20,287.57/27,996.32 = 11,335.14/x
  3. Step 3: Cross multiply
    20,287.57x = 27,996.32 × 11,335.14
  4. Step 4: Simplify right side
    20,287.57x = 317,342,206.68
  5. Step 5: Solve for x
    x = 317,342,206.68/20,287.57
  6. Step 6: Final answer
    x = 15,642.20

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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.