Home / 13,939.46-20,898.03-7,272.61

Finding the Fourth Proportional to 13,939.46, 20,898.03 and 7,272.61

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Solution

The fourth proportional to 13,939.46, 20,898.03 and 7,272.61 is: 10,903.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.46 : 20,898.03 = 7,272.61 : x
  2. Step 2: Convert to fraction form
    13,939.46/20,898.03 = 7,272.61/x
  3. Step 3: Cross multiply
    13,939.46x = 20,898.03 × 7,272.61
  4. Step 4: Simplify right side
    13,939.46x = 151,983,169.71
  5. Step 5: Solve for x
    x = 151,983,169.71/13,939.46
  6. Step 6: Final answer
    x = 10,903.09

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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.