Home / 13,480.08-20,220.12-4,119.72

Finding the Fourth Proportional to 13,480.08, 20,220.12 and 4,119.72

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Solution

The fourth proportional to 13,480.08, 20,220.12 and 4,119.72 is: 6,179.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.08 : 20,220.12 = 4,119.72 : x
  2. Step 2: Convert to fraction form
    13,480.08/20,220.12 = 4,119.72/x
  3. Step 3: Cross multiply
    13,480.08x = 20,220.12 × 4,119.72
  4. Step 4: Simplify right side
    13,480.08x = 83,301,232.77
  5. Step 5: Solve for x
    x = 83,301,232.77/13,480.08
  6. Step 6: Final answer
    x = 6,179.58

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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.