Home / 13,828.04-20,742.13-3,439.79

Finding the Fourth Proportional to 13,828.04, 20,742.13 and 3,439.79

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Solution

The fourth proportional to 13,828.04, 20,742.13 and 3,439.79 is: 5,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.04 : 20,742.13 = 3,439.79 : x
  2. Step 2: Convert to fraction form
    13,828.04/20,742.13 = 3,439.79/x
  3. Step 3: Cross multiply
    13,828.04x = 20,742.13 × 3,439.79
  4. Step 4: Simplify right side
    13,828.04x = 71,348,467.64
  5. Step 5: Solve for x
    x = 71,348,467.64/13,828.04
  6. Step 6: Final answer
    x = 5,159.70

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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.