Home / 13,836.44-19,089.84-8,171.40

Finding the Fourth Proportional to 13,836.44, 19,089.84 and 8,171.40

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Solution

The fourth proportional to 13,836.44, 19,089.84 and 8,171.40 is: 11,273.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,836.44 : 19,089.84 = 8,171.40 : x
  2. Step 2: Convert to fraction form
    13,836.44/19,089.84 = 8,171.40/x
  3. Step 3: Cross multiply
    13,836.44x = 19,089.84 × 8,171.40
  4. Step 4: Simplify right side
    13,836.44x = 155,990,718.58
  5. Step 5: Solve for x
    x = 155,990,718.58/13,836.44
  6. Step 6: Final answer
    x = 11,273.91

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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.