Home / 10,816.12-16,225.09-3,420.42

Finding the Fourth Proportional to 10,816.12, 16,225.09 and 3,420.42

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Solution

The fourth proportional to 10,816.12, 16,225.09 and 3,420.42 is: 5,130.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,816.12 : 16,225.09 = 3,420.42 : x
  2. Step 2: Convert to fraction form
    10,816.12/16,225.09 = 3,420.42/x
  3. Step 3: Cross multiply
    10,816.12x = 16,225.09 × 3,420.42
  4. Step 4: Simplify right side
    10,816.12x = 55,496,541.21
  5. Step 5: Solve for x
    x = 55,496,541.21/10,816.12
  6. Step 6: Final answer
    x = 5,130.91

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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.