Home / 12,657.01-18,988.59-3,891.92

Finding the Fourth Proportional to 12,657.01, 18,988.59 and 3,891.92

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Solution

The fourth proportional to 12,657.01, 18,988.59 and 3,891.92 is: 5,838.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.01 : 18,988.59 = 3,891.92 : x
  2. Step 2: Convert to fraction form
    12,657.01/18,988.59 = 3,891.92/x
  3. Step 3: Cross multiply
    12,657.01x = 18,988.59 × 3,891.92
  4. Step 4: Simplify right side
    12,657.01x = 73,902,120.66
  5. Step 5: Solve for x
    x = 73,902,120.66/12,657.01
  6. Step 6: Final answer
    x = 5,838.83

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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.