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Finding the Fourth Proportional to 20,504.66, 30,766.72 and 12,201.08

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Solution

The fourth proportional to 20,504.66, 30,766.72 and 12,201.08 is: 18,307.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.66 : 30,766.72 = 12,201.08 : x
  2. Step 2: Convert to fraction form
    20,504.66/30,766.72 = 12,201.08/x
  3. Step 3: Cross multiply
    20,504.66x = 30,766.72 × 12,201.08
  4. Step 4: Simplify right side
    20,504.66x = 375,387,212.06
  5. Step 5: Solve for x
    x = 375,387,212.06/20,504.66
  6. Step 6: Final answer
    x = 18,307.41

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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.