Home / 18,821.64-28,241.64-7,731.66

Finding the Fourth Proportional to 18,821.64, 28,241.64 and 7,731.66

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Solution

The fourth proportional to 18,821.64, 28,241.64 and 7,731.66 is: 11,601.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.64 : 28,241.64 = 7,731.66 : x
  2. Step 2: Convert to fraction form
    18,821.64/28,241.64 = 7,731.66/x
  3. Step 3: Cross multiply
    18,821.64x = 28,241.64 × 7,731.66
  4. Step 4: Simplify right side
    18,821.64x = 218,354,758.32
  5. Step 5: Solve for x
    x = 218,354,758.32/18,821.64
  6. Step 6: Final answer
    x = 11,601.26

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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.