Home / 13,828.34-20,742.10-3,440.09

Finding the Fourth Proportional to 13,828.34, 20,742.10 and 3,440.09

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Solution

The fourth proportional to 13,828.34, 20,742.10 and 3,440.09 is: 5,160.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.34 : 20,742.10 = 3,440.09 : x
  2. Step 2: Convert to fraction form
    13,828.34/20,742.10 = 3,440.09/x
  3. Step 3: Cross multiply
    13,828.34x = 20,742.10 × 3,440.09
  4. Step 4: Simplify right side
    13,828.34x = 71,354,734.04
  5. Step 5: Solve for x
    x = 71,354,734.04/13,828.34
  6. Step 6: Final answer
    x = 5,160.04

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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.