Home / 13,382.10-20,085.48-6,813

Finding the Fourth Proportional to 13,382.10, 20,085.48 and 6,813

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Solution

The fourth proportional to 13,382.10, 20,085.48 and 6,813 is: 10,225.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.10 : 20,085.48 = 6,813 : x
  2. Step 2: Convert to fraction form
    13,382.10/20,085.48 = 6,813/x
  3. Step 3: Cross multiply
    13,382.10x = 20,085.48 × 6,813
  4. Step 4: Simplify right side
    13,382.10x = 136,842,375.24
  5. Step 5: Solve for x
    x = 136,842,375.24/13,382.10
  6. Step 6: Final answer
    x = 10,225.78

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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.