Home / 13,479.36-20,218.04-5,160.12

Finding the Fourth Proportional to 13,479.36, 20,218.04 and 5,160.12

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Solution

The fourth proportional to 13,479.36, 20,218.04 and 5,160.12 is: 7,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.36 : 20,218.04 = 5,160.12 : x
  2. Step 2: Convert to fraction form
    13,479.36/20,218.04 = 5,160.12/x
  3. Step 3: Cross multiply
    13,479.36x = 20,218.04 × 5,160.12
  4. Step 4: Simplify right side
    13,479.36x = 104,327,512.56
  5. Step 5: Solve for x
    x = 104,327,512.56/13,479.36
  6. Step 6: Final answer
    x = 7,739.80

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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.