Home / 10,816.52-16,223.36-3,421.72

Finding the Fourth Proportional to 10,816.52, 16,223.36 and 3,421.72

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Solution

The fourth proportional to 10,816.52, 16,223.36 and 3,421.72 is: 5,132.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,816.52 : 16,223.36 = 3,421.72 : x
  2. Step 2: Convert to fraction form
    10,816.52/16,223.36 = 3,421.72/x
  3. Step 3: Cross multiply
    10,816.52x = 16,223.36 × 3,421.72
  4. Step 4: Simplify right side
    10,816.52x = 55,511,795.38
  5. Step 5: Solve for x
    x = 55,511,795.38/10,816.52
  6. Step 6: Final answer
    x = 5,132.13

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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.