Home / 20,288.14-27,997.47-11,335.55

Finding the Fourth Proportional to 20,288.14, 27,997.47 and 11,335.55

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Solution

The fourth proportional to 20,288.14, 27,997.47 and 11,335.55 is: 15,642.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.14 : 27,997.47 = 11,335.55 : x
  2. Step 2: Convert to fraction form
    20,288.14/27,997.47 = 11,335.55/x
  3. Step 3: Cross multiply
    20,288.14x = 27,997.47 × 11,335.55
  4. Step 4: Simplify right side
    20,288.14x = 317,366,581.07
  5. Step 5: Solve for x
    x = 317,366,581.07/20,288.14
  6. Step 6: Final answer
    x = 15,642.96

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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.