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Finding the Fourth Proportional to 18,908, 28,355.37 and 5,577.46

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Solution

The fourth proportional to 18,908, 28,355.37 and 5,577.46 is: 8,364.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908 : 28,355.37 = 5,577.46 : x
  2. Step 2: Convert to fraction form
    18,908/28,355.37 = 5,577.46/x
  3. Step 3: Cross multiply
    18,908x = 28,355.37 × 5,577.46
  4. Step 4: Simplify right side
    18,908x = 158,150,941.96
  5. Step 5: Solve for x
    x = 158,150,941.96/18,908
  6. Step 6: Final answer
    x = 8,364.23

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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.