Home / 13,888.43-20,828.93-3,892.61

Finding the Fourth Proportional to 13,888.43, 20,828.93 and 3,892.61

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Solution

The fourth proportional to 13,888.43, 20,828.93 and 3,892.61 is: 5,837.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.43 : 20,828.93 = 3,892.61 : x
  2. Step 2: Convert to fraction form
    13,888.43/20,828.93 = 3,892.61/x
  3. Step 3: Cross multiply
    13,888.43x = 20,828.93 × 3,892.61
  4. Step 4: Simplify right side
    13,888.43x = 81,078,949.83
  5. Step 5: Solve for x
    x = 81,078,949.83/13,888.43
  6. Step 6: Final answer
    x = 5,837.88

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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.