Home / 20,188.88-27,836.82-13,818.54

Finding the Fourth Proportional to 20,188.88, 27,836.82 and 13,818.54

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Solution

The fourth proportional to 20,188.88, 27,836.82 and 13,818.54 is: 19,053.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.88 : 27,836.82 = 13,818.54 : x
  2. Step 2: Convert to fraction form
    20,188.88/27,836.82 = 13,818.54/x
  3. Step 3: Cross multiply
    20,188.88x = 27,836.82 × 13,818.54
  4. Step 4: Simplify right side
    20,188.88x = 384,664,210.64
  5. Step 5: Solve for x
    x = 384,664,210.64/20,188.88
  6. Step 6: Final answer
    x = 19,053.27

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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.