Home / 13,580.22-20,379.37-5,581.55

Finding the Fourth Proportional to 13,580.22, 20,379.37 and 5,581.55

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Solution

The fourth proportional to 13,580.22, 20,379.37 and 5,581.55 is: 8,376.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.22 : 20,379.37 = 5,581.55 : x
  2. Step 2: Convert to fraction form
    13,580.22/20,379.37 = 5,581.55/x
  3. Step 3: Cross multiply
    13,580.22x = 20,379.37 × 5,581.55
  4. Step 4: Simplify right side
    13,580.22x = 113,748,407.72
  5. Step 5: Solve for x
    x = 113,748,407.72/13,580.22
  6. Step 6: Final answer
    x = 8,376.04

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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.