Home / 21,388.87-32,083.19-5,806.50

Finding the Fourth Proportional to 21,388.87, 32,083.19 and 5,806.50

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Solution

The fourth proportional to 21,388.87, 32,083.19 and 5,806.50 is: 8,709.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,388.87 : 32,083.19 = 5,806.50 : x
  2. Step 2: Convert to fraction form
    21,388.87/32,083.19 = 5,806.50/x
  3. Step 3: Cross multiply
    21,388.87x = 32,083.19 × 5,806.50
  4. Step 4: Simplify right side
    21,388.87x = 186,290,915.16
  5. Step 5: Solve for x
    x = 186,290,915.16/21,388.87
  6. Step 6: Final answer
    x = 8,709.71

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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.