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Finding the Fourth Proportional to 19,803.97, 29,705.94 and 7,957.74

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Solution

The fourth proportional to 19,803.97, 29,705.94 and 7,957.74 is: 11,936.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,803.97 : 29,705.94 = 7,957.74 : x
  2. Step 2: Convert to fraction form
    19,803.97/29,705.94 = 7,957.74/x
  3. Step 3: Cross multiply
    19,803.97x = 29,705.94 × 7,957.74
  4. Step 4: Simplify right side
    19,803.97x = 236,392,258.37
  5. Step 5: Solve for x
    x = 236,392,258.37/19,803.97
  6. Step 6: Final answer
    x = 11,936.61

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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.