Home / 14,747.28-20,351.70-8,458.44

Finding the Fourth Proportional to 14,747.28, 20,351.70 and 8,458.44

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Solution

The fourth proportional to 14,747.28, 20,351.70 and 8,458.44 is: 11,672.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,747.28 : 20,351.70 = 8,458.44 : x
  2. Step 2: Convert to fraction form
    14,747.28/20,351.70 = 8,458.44/x
  3. Step 3: Cross multiply
    14,747.28x = 20,351.70 × 8,458.44
  4. Step 4: Simplify right side
    14,747.28x = 172,143,633.35
  5. Step 5: Solve for x
    x = 172,143,633.35/14,747.28
  6. Step 6: Final answer
    x = 11,672.91

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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.