Home / 20,687.68-31,036.38-5,896.81

Finding the Fourth Proportional to 20,687.68, 31,036.38 and 5,896.81

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Solution

The fourth proportional to 20,687.68, 31,036.38 and 5,896.81 is: 8,846.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.68 : 31,036.38 = 5,896.81 : x
  2. Step 2: Convert to fraction form
    20,687.68/31,036.38 = 5,896.81/x
  3. Step 3: Cross multiply
    20,687.68x = 31,036.38 × 5,896.81
  4. Step 4: Simplify right side
    20,687.68x = 183,015,635.95
  5. Step 5: Solve for x
    x = 183,015,635.95/20,687.68
  6. Step 6: Final answer
    x = 8,846.60

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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.