Home / 15,305.24-21,121.46-8,406.98

Finding the Fourth Proportional to 15,305.24, 21,121.46 and 8,406.98

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Solution

The fourth proportional to 15,305.24, 21,121.46 and 8,406.98 is: 11,601.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,305.24 : 21,121.46 = 8,406.98 : x
  2. Step 2: Convert to fraction form
    15,305.24/21,121.46 = 8,406.98/x
  3. Step 3: Cross multiply
    15,305.24x = 21,121.46 × 8,406.98
  4. Step 4: Simplify right side
    15,305.24x = 177,567,544.15
  5. Step 5: Solve for x
    x = 177,567,544.15/15,305.24
  6. Step 6: Final answer
    x = 11,601.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.