Home / 13,440.13-20,162.32-3,580.20

Finding the Fourth Proportional to 13,440.13, 20,162.32 and 3,580.20

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Solution

The fourth proportional to 13,440.13, 20,162.32 and 3,580.20 is: 5,370.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.13 : 20,162.32 = 3,580.20 : x
  2. Step 2: Convert to fraction form
    13,440.13/20,162.32 = 3,580.20/x
  3. Step 3: Cross multiply
    13,440.13x = 20,162.32 × 3,580.20
  4. Step 4: Simplify right side
    13,440.13x = 72,185,129.11
  5. Step 5: Solve for x
    x = 72,185,129.11/13,440.13
  6. Step 6: Final answer
    x = 5,370.87

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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.