Home / 13,439.04-20,229.32-11,434.56

Finding the Fourth Proportional to 13,439.04, 20,229.32 and 11,434.56

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Solution

The fourth proportional to 13,439.04, 20,229.32 and 11,434.56 is: 17,212.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.04 : 20,229.32 = 11,434.56 : x
  2. Step 2: Convert to fraction form
    13,439.04/20,229.32 = 11,434.56/x
  3. Step 3: Cross multiply
    13,439.04x = 20,229.32 × 11,434.56
  4. Step 4: Simplify right side
    13,439.04x = 231,313,373.30
  5. Step 5: Solve for x
    x = 231,313,373.30/13,439.04
  6. Step 6: Final answer
    x = 17,212.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.