Home / 14,835.62-20,471.72-8,120.72

Finding the Fourth Proportional to 14,835.62, 20,471.72 and 8,120.72

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Solution

The fourth proportional to 14,835.62, 20,471.72 and 8,120.72 is: 11,205.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,835.62 : 20,471.72 = 8,120.72 : x
  2. Step 2: Convert to fraction form
    14,835.62/20,471.72 = 8,120.72/x
  3. Step 3: Cross multiply
    14,835.62x = 20,471.72 × 8,120.72
  4. Step 4: Simplify right side
    14,835.62x = 166,245,106.04
  5. Step 5: Solve for x
    x = 166,245,106.04/14,835.62
  6. Step 6: Final answer
    x = 11,205.81

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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.