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Finding the Fourth Proportional to 20,464.84, 30,696.90 and 5,672.08

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Solution

The fourth proportional to 20,464.84, 30,696.90 and 5,672.08 is: 8,508.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.84 : 30,696.90 = 5,672.08 : x
  2. Step 2: Convert to fraction form
    20,464.84/30,696.90 = 5,672.08/x
  3. Step 3: Cross multiply
    20,464.84x = 30,696.90 × 5,672.08
  4. Step 4: Simplify right side
    20,464.84x = 174,115,272.55
  5. Step 5: Solve for x
    x = 174,115,272.55/20,464.84
  6. Step 6: Final answer
    x = 8,508.02

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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.