Home / 20,288.88-27,998.13-11,336.45

Finding the Fourth Proportional to 20,288.88, 27,998.13 and 11,336.45

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Solution

The fourth proportional to 20,288.88, 27,998.13 and 11,336.45 is: 15,644.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.88 : 27,998.13 = 11,336.45 : x
  2. Step 2: Convert to fraction form
    20,288.88/27,998.13 = 11,336.45/x
  3. Step 3: Cross multiply
    20,288.88x = 27,998.13 × 11,336.45
  4. Step 4: Simplify right side
    20,288.88x = 317,399,428.32
  5. Step 5: Solve for x
    x = 317,399,428.32/20,288.88
  6. Step 6: Final answer
    x = 15,644.01

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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.