Home / 13,816.53-20,721.89-4,457.43

Finding the Fourth Proportional to 13,816.53, 20,721.89 and 4,457.43

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Solution

The fourth proportional to 13,816.53, 20,721.89 and 4,457.43 is: 6,685.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.53 : 20,721.89 = 4,457.43 : x
  2. Step 2: Convert to fraction form
    13,816.53/20,721.89 = 4,457.43/x
  3. Step 3: Cross multiply
    13,816.53x = 20,721.89 × 4,457.43
  4. Step 4: Simplify right side
    13,816.53x = 92,366,351.86
  5. Step 5: Solve for x
    x = 92,366,351.86/13,816.53
  6. Step 6: Final answer
    x = 6,685.21

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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.