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Finding the Fourth Proportional to 13,896.88, 20,839.02 and 5,995.66

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Solution

The fourth proportional to 13,896.88, 20,839.02 and 5,995.66 is: 8,990.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896.88 : 20,839.02 = 5,995.66 : x
  2. Step 2: Convert to fraction form
    13,896.88/20,839.02 = 5,995.66/x
  3. Step 3: Cross multiply
    13,896.88x = 20,839.02 × 5,995.66
  4. Step 4: Simplify right side
    13,896.88x = 124,943,678.65
  5. Step 5: Solve for x
    x = 124,943,678.65/13,896.88
  6. Step 6: Final answer
    x = 8,990.77

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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.