Home / 13,631.24-20,456.24-5,311.32

Finding the Fourth Proportional to 13,631.24, 20,456.24 and 5,311.32

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Solution

The fourth proportional to 13,631.24, 20,456.24 and 5,311.32 is: 7,970.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.24 : 20,456.24 = 5,311.32 : x
  2. Step 2: Convert to fraction form
    13,631.24/20,456.24 = 5,311.32/x
  3. Step 3: Cross multiply
    13,631.24x = 20,456.24 × 5,311.32
  4. Step 4: Simplify right side
    13,631.24x = 108,649,610.08
  5. Step 5: Solve for x
    x = 108,649,610.08/13,631.24
  6. Step 6: Final answer
    x = 7,970.64

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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.