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Finding the Fourth Proportional to 18,764.97, 28,146.91 and 4,724.97

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Solution

The fourth proportional to 18,764.97, 28,146.91 and 4,724.97 is: 7,087.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.97 : 28,146.91 = 4,724.97 : x
  2. Step 2: Convert to fraction form
    18,764.97/28,146.91 = 4,724.97/x
  3. Step 3: Cross multiply
    18,764.97x = 28,146.91 × 4,724.97
  4. Step 4: Simplify right side
    18,764.97x = 132,993,305.34
  5. Step 5: Solve for x
    x = 132,993,305.34/18,764.97
  6. Step 6: Final answer
    x = 7,087.32

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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.