Home / 13,828.28-20,742.42-3,440.04

Finding the Fourth Proportional to 13,828.28, 20,742.42 and 3,440.04

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Solution

The fourth proportional to 13,828.28, 20,742.42 and 3,440.04 is: 5,160.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.28 : 20,742.42 = 3,440.04 : x
  2. Step 2: Convert to fraction form
    13,828.28/20,742.42 = 3,440.04/x
  3. Step 3: Cross multiply
    13,828.28x = 20,742.42 × 3,440.04
  4. Step 4: Simplify right side
    13,828.28x = 71,354,754.50
  5. Step 5: Solve for x
    x = 71,354,754.50/13,828.28
  6. Step 6: Final answer
    x = 5,160.06

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1.5x scale

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.