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Finding the Fourth Proportional to 35,286.66, 48,693.81 and 20,947.11

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Solution

The fourth proportional to 35,286.66, 48,693.81 and 20,947.11 is: 28,905.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,286.66 : 48,693.81 = 20,947.11 : x
  2. Step 2: Convert to fraction form
    35,286.66/48,693.81 = 20,947.11/x
  3. Step 3: Cross multiply
    35,286.66x = 48,693.81 × 20,947.11
  4. Step 4: Simplify right side
    35,286.66x = 1,019,994,594.39
  5. Step 5: Solve for x
    x = 1,019,994,594.39/35,286.66
  6. Step 6: Final answer
    x = 28,905.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.