Home / 21,428.87-32,144.81-6,635.84

Finding the Fourth Proportional to 21,428.87, 32,144.81 and 6,635.84

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Solution

The fourth proportional to 21,428.87, 32,144.81 and 6,635.84 is: 9,954.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.87 : 32,144.81 = 6,635.84 : x
  2. Step 2: Convert to fraction form
    21,428.87/32,144.81 = 6,635.84/x
  3. Step 3: Cross multiply
    21,428.87x = 32,144.81 × 6,635.84
  4. Step 4: Simplify right side
    21,428.87x = 213,307,622.09
  5. Step 5: Solve for x
    x = 213,307,622.09/21,428.87
  6. Step 6: Final answer
    x = 9,954.22

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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.