Home / 11,821.52-17,732.28-7,428.08

Finding the Fourth Proportional to 11,821.52, 17,732.28 and 7,428.08

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Solution

The fourth proportional to 11,821.52, 17,732.28 and 7,428.08 is: 11,142.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.52 : 17,732.28 = 7,428.08 : x
  2. Step 2: Convert to fraction form
    11,821.52/17,732.28 = 7,428.08/x
  3. Step 3: Cross multiply
    11,821.52x = 17,732.28 × 7,428.08
  4. Step 4: Simplify right side
    11,821.52x = 131,716,794.42
  5. Step 5: Solve for x
    x = 131,716,794.42/11,821.52
  6. Step 6: Final answer
    x = 11,142.12

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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.