Home / 20,995.62-31,477.98-9,896.04

Finding the Fourth Proportional to 20,995.62, 31,477.98 and 9,896.04

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Solution

The fourth proportional to 20,995.62, 31,477.98 and 9,896.04 is: 14,836.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.62 : 31,477.98 = 9,896.04 : x
  2. Step 2: Convert to fraction form
    20,995.62/31,477.98 = 9,896.04/x
  3. Step 3: Cross multiply
    20,995.62x = 31,477.98 × 9,896.04
  4. Step 4: Simplify right side
    20,995.62x = 311,507,349.20
  5. Step 5: Solve for x
    x = 311,507,349.20/20,995.62
  6. Step 6: Final answer
    x = 14,836.78

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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.