Home / 17,878.12-26,740.62-12,891.88

Finding the Fourth Proportional to 17,878.12, 26,740.62 and 12,891.88

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Solution

The fourth proportional to 17,878.12, 26,740.62 and 12,891.88 is: 19,282.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,878.12 : 26,740.62 = 12,891.88 : x
  2. Step 2: Convert to fraction form
    17,878.12/26,740.62 = 12,891.88/x
  3. Step 3: Cross multiply
    17,878.12x = 26,740.62 × 12,891.88
  4. Step 4: Simplify right side
    17,878.12x = 344,736,864.17
  5. Step 5: Solve for x
    x = 344,736,864.17/17,878.12
  6. Step 6: Final answer
    x = 19,282.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.