Home / 13,661.36-20,479.82-5,339.42

Finding the Fourth Proportional to 13,661.36, 20,479.82 and 5,339.42

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Solution

The fourth proportional to 13,661.36, 20,479.82 and 5,339.42 is: 8,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.36 : 20,479.82 = 5,339.42 : x
  2. Step 2: Convert to fraction form
    13,661.36/20,479.82 = 5,339.42/x
  3. Step 3: Cross multiply
    13,661.36x = 20,479.82 × 5,339.42
  4. Step 4: Simplify right side
    13,661.36x = 109,350,231.41
  5. Step 5: Solve for x
    x = 109,350,231.41/13,661.36
  6. Step 6: Final answer
    x = 8,004.35

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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.