Home / 13,614.70-20,412.44-5,287.78

Finding the Fourth Proportional to 13,614.70, 20,412.44 and 5,287.78

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Solution

The fourth proportional to 13,614.70, 20,412.44 and 5,287.78 is: 7,927.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,614.70 : 20,412.44 = 5,287.78 : x
  2. Step 2: Convert to fraction form
    13,614.70/20,412.44 = 5,287.78/x
  3. Step 3: Cross multiply
    13,614.70x = 20,412.44 × 5,287.78
  4. Step 4: Simplify right side
    13,614.70x = 107,936,491.98
  5. Step 5: Solve for x
    x = 107,936,491.98/13,614.70
  6. Step 6: Final answer
    x = 7,927.94

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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.