Home / 13,479.52-20,221.90-4,119.96

Finding the Fourth Proportional to 13,479.52, 20,221.90 and 4,119.96

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Solution

The fourth proportional to 13,479.52, 20,221.90 and 4,119.96 is: 6,180.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.52 : 20,221.90 = 4,119.96 : x
  2. Step 2: Convert to fraction form
    13,479.52/20,221.90 = 4,119.96/x
  3. Step 3: Cross multiply
    13,479.52x = 20,221.90 × 4,119.96
  4. Step 4: Simplify right side
    13,479.52x = 83,313,419.12
  5. Step 5: Solve for x
    x = 83,313,419.12/13,479.52
  6. Step 6: Final answer
    x = 6,180.74

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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.