Home / 13,356.43-20,034.42-5,457.21

Finding the Fourth Proportional to 13,356.43, 20,034.42 and 5,457.21

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Solution

The fourth proportional to 13,356.43, 20,034.42 and 5,457.21 is: 8,185.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.43 : 20,034.42 = 5,457.21 : x
  2. Step 2: Convert to fraction form
    13,356.43/20,034.42 = 5,457.21/x
  3. Step 3: Cross multiply
    13,356.43x = 20,034.42 × 5,457.21
  4. Step 4: Simplify right side
    13,356.43x = 109,332,037.17
  5. Step 5: Solve for x
    x = 109,332,037.17/13,356.43
  6. Step 6: Final answer
    x = 8,185.72

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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.