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Finding the Fourth Proportional to 20,728.00, 31,092.00 and 7,573.20

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Solution

The fourth proportional to 20,728.00, 31,092.00 and 7,573.20 is: 11,359.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.00 : 31,092.00 = 7,573.20 : x
  2. Step 2: Convert to fraction form
    20,728.00/31,092.00 = 7,573.20/x
  3. Step 3: Cross multiply
    20,728.00x = 31,092.00 × 7,573.20
  4. Step 4: Simplify right side
    20,728.00x = 235,465,832.00
  5. Step 5: Solve for x
    x = 235,465,832.00/20,728.00
  6. Step 6: Final answer
    x = 11,359.79

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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.