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Finding the Fourth Proportional to 20,087.46, 30,101.52 and 18,964.17

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Solution

The fourth proportional to 20,087.46, 30,101.52 and 18,964.17 is: 28,418.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.46 : 30,101.52 = 18,964.17 : x
  2. Step 2: Convert to fraction form
    20,087.46/30,101.52 = 18,964.17/x
  3. Step 3: Cross multiply
    20,087.46x = 30,101.52 × 18,964.17
  4. Step 4: Simplify right side
    20,087.46x = 570,850,342.54
  5. Step 5: Solve for x
    x = 570,850,342.54/20,087.46
  6. Step 6: Final answer
    x = 28,418.24

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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.