Home / 13,479.30-20,215.35-4,119.30

Finding the Fourth Proportional to 13,479.30, 20,215.35 and 4,119.30

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Solution

The fourth proportional to 13,479.30, 20,215.35 and 4,119.30 is: 6,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.30 : 20,215.35 = 4,119.30 : x
  2. Step 2: Convert to fraction form
    13,479.30/20,215.35 = 4,119.30/x
  3. Step 3: Cross multiply
    13,479.30x = 20,215.35 × 4,119.30
  4. Step 4: Simplify right side
    13,479.30x = 83,273,091.26
  5. Step 5: Solve for x
    x = 83,273,091.26/13,479.30
  6. Step 6: Final answer
    x = 6,177.85

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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.