Home / 21,372-32,054.04-5,787.60

Finding the Fourth Proportional to 21,372, 32,054.04 and 5,787.60

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Solution

The fourth proportional to 21,372, 32,054.04 and 5,787.60 is: 8,680.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372 : 32,054.04 = 5,787.60 : x
  2. Step 2: Convert to fraction form
    21,372/32,054.04 = 5,787.60/x
  3. Step 3: Cross multiply
    21,372x = 32,054.04 × 5,787.60
  4. Step 4: Simplify right side
    21,372x = 185,515,961.90
  5. Step 5: Solve for x
    x = 185,515,961.90/21,372
  6. Step 6: Final answer
    x = 8,680.33

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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.