Home / 12,891.48-19,304.40-8,495.61

Finding the Fourth Proportional to 12,891.48, 19,304.40 and 8,495.61

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Solution

The fourth proportional to 12,891.48, 19,304.40 and 8,495.61 is: 12,721.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891.48 : 19,304.40 = 8,495.61 : x
  2. Step 2: Convert to fraction form
    12,891.48/19,304.40 = 8,495.61/x
  3. Step 3: Cross multiply
    12,891.48x = 19,304.40 × 8,495.61
  4. Step 4: Simplify right side
    12,891.48x = 164,002,653.68
  5. Step 5: Solve for x
    x = 164,002,653.68/12,891.48
  6. Step 6: Final answer
    x = 12,721.79

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1.5x scale

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.