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Finding the Fourth Proportional to 20,463.72, 30,696.24 and 5,672.82

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Solution

The fourth proportional to 20,463.72, 30,696.24 and 5,672.82 is: 8,509.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,463.72 : 30,696.24 = 5,672.82 : x
  2. Step 2: Convert to fraction form
    20,463.72/30,696.24 = 5,672.82/x
  3. Step 3: Cross multiply
    20,463.72x = 30,696.24 × 5,672.82
  4. Step 4: Simplify right side
    20,463.72x = 174,134,244.20
  5. Step 5: Solve for x
    x = 174,134,244.20/20,463.72
  6. Step 6: Final answer
    x = 8,509.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.