Home / 13,579.48-20,369.72-4,220.44

Finding the Fourth Proportional to 13,579.48, 20,369.72 and 4,220.44

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Solution

The fourth proportional to 13,579.48, 20,369.72 and 4,220.44 is: 6,330.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.48 : 20,369.72 = 4,220.44 : x
  2. Step 2: Convert to fraction form
    13,579.48/20,369.72 = 4,220.44/x
  3. Step 3: Cross multiply
    13,579.48x = 20,369.72 × 4,220.44
  4. Step 4: Simplify right side
    13,579.48x = 85,969,181.08
  5. Step 5: Solve for x
    x = 85,969,181.08/13,579.48
  6. Step 6: Final answer
    x = 6,330.82

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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.