Home / 20,287.95-27,997.29-11,213.06

Finding the Fourth Proportional to 20,287.95, 27,997.29 and 11,213.06

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Solution

The fourth proportional to 20,287.95, 27,997.29 and 11,213.06 is: 15,473.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.95 : 27,997.29 = 11,213.06 : x
  2. Step 2: Convert to fraction form
    20,287.95/27,997.29 = 11,213.06/x
  3. Step 3: Cross multiply
    20,287.95x = 27,997.29 × 11,213.06
  4. Step 4: Simplify right side
    20,287.95x = 313,935,152.62
  5. Step 5: Solve for x
    x = 313,935,152.62/20,287.95
  6. Step 6: Final answer
    x = 15,473.97

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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.