Home / 10,821.81-16,226.64-3,428.13

Finding the Fourth Proportional to 10,821.81, 16,226.64 and 3,428.13

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Solution

The fourth proportional to 10,821.81, 16,226.64 and 3,428.13 is: 5,140.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.81 : 16,226.64 = 3,428.13 : x
  2. Step 2: Convert to fraction form
    10,821.81/16,226.64 = 3,428.13/x
  3. Step 3: Cross multiply
    10,821.81x = 16,226.64 × 3,428.13
  4. Step 4: Simplify right side
    10,821.81x = 55,627,031.38
  5. Step 5: Solve for x
    x = 55,627,031.38/10,821.81
  6. Step 6: Final answer
    x = 5,140.27

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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.