Home / 15,913.62-21,960.18-8,839.98

Finding the Fourth Proportional to 15,913.62, 21,960.18 and 8,839.98

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Solution

The fourth proportional to 15,913.62, 21,960.18 and 8,839.98 is: 12,198.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.62 : 21,960.18 = 8,839.98 : x
  2. Step 2: Convert to fraction form
    15,913.62/21,960.18 = 8,839.98/x
  3. Step 3: Cross multiply
    15,913.62x = 21,960.18 × 8,839.98
  4. Step 4: Simplify right side
    15,913.62x = 194,127,552.00
  5. Step 5: Solve for x
    x = 194,127,552.00/15,913.62
  6. Step 6: Final answer
    x = 12,198.83

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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.