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Finding the Fourth Proportional to 20,791.04, 31,198.86 and 7,652.64

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Solution

The fourth proportional to 20,791.04, 31,198.86 and 7,652.64 is: 11,483.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.04 : 31,198.86 = 7,652.64 : x
  2. Step 2: Convert to fraction form
    20,791.04/31,198.86 = 7,652.64/x
  3. Step 3: Cross multiply
    20,791.04x = 31,198.86 × 7,652.64
  4. Step 4: Simplify right side
    20,791.04x = 238,753,643.99
  5. Step 5: Solve for x
    x = 238,753,643.99/20,791.04
  6. Step 6: Final answer
    x = 11,483.49

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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.