Home / 15,213.09-20,993.01-8,406.82

Finding the Fourth Proportional to 15,213.09, 20,993.01 and 8,406.82

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Solution

The fourth proportional to 15,213.09, 20,993.01 and 8,406.82 is: 11,600.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,213.09 : 20,993.01 = 8,406.82 : x
  2. Step 2: Convert to fraction form
    15,213.09/20,993.01 = 8,406.82/x
  3. Step 3: Cross multiply
    15,213.09x = 20,993.01 × 8,406.82
  4. Step 4: Simplify right side
    15,213.09x = 176,484,456.33
  5. Step 5: Solve for x
    x = 176,484,456.33/15,213.09
  6. Step 6: Final answer
    x = 11,600.83

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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.