Home / 20,181.88-27,836.10-13,896.28

Finding the Fourth Proportional to 20,181.88, 27,836.10 and 13,896.28

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Solution

The fourth proportional to 20,181.88, 27,836.10 and 13,896.28 is: 19,166.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.88 : 27,836.10 = 13,896.28 : x
  2. Step 2: Convert to fraction form
    20,181.88/27,836.10 = 13,896.28/x
  3. Step 3: Cross multiply
    20,181.88x = 27,836.10 × 13,896.28
  4. Step 4: Simplify right side
    20,181.88x = 386,818,239.71
  5. Step 5: Solve for x
    x = 386,818,239.71/20,181.88
  6. Step 6: Final answer
    x = 19,166.61

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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.