Home / 15,003.72-20,704.49-8,629.83

Finding the Fourth Proportional to 15,003.72, 20,704.49 and 8,629.83

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Solution

The fourth proportional to 15,003.72, 20,704.49 and 8,629.83 is: 11,908.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.72 : 20,704.49 = 8,629.83 : x
  2. Step 2: Convert to fraction form
    15,003.72/20,704.49 = 8,629.83/x
  3. Step 3: Cross multiply
    15,003.72x = 20,704.49 × 8,629.83
  4. Step 4: Simplify right side
    15,003.72x = 178,676,125.41
  5. Step 5: Solve for x
    x = 178,676,125.41/15,003.72
  6. Step 6: Final answer
    x = 11,908.79

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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.