Home / 20,287.68-27,995.40-11,334.48

Finding the Fourth Proportional to 20,287.68, 27,995.40 and 11,334.48

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Solution

The fourth proportional to 20,287.68, 27,995.40 and 11,334.48 is: 15,640.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.68 : 27,995.40 = 11,334.48 : x
  2. Step 2: Convert to fraction form
    20,287.68/27,995.40 = 11,334.48/x
  3. Step 3: Cross multiply
    20,287.68x = 27,995.40 × 11,334.48
  4. Step 4: Simplify right side
    20,287.68x = 317,313,301.39
  5. Step 5: Solve for x
    x = 317,313,301.39/20,287.68
  6. Step 6: Final answer
    x = 15,640.69

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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.