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Finding the Fourth Proportional to 20,447.88, 30,657.08 and 7,957.37

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Solution

The fourth proportional to 20,447.88, 30,657.08 and 7,957.37 is: 11,930.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.88 : 30,657.08 = 7,957.37 : x
  2. Step 2: Convert to fraction form
    20,447.88/30,657.08 = 7,957.37/x
  3. Step 3: Cross multiply
    20,447.88x = 30,657.08 × 7,957.37
  4. Step 4: Simplify right side
    20,447.88x = 243,949,825.22
  5. Step 5: Solve for x
    x = 243,949,825.22/20,447.88
  6. Step 6: Final answer
    x = 11,930.33

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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.