Home / 11,212.18-16,817.64-3,420.38

Finding the Fourth Proportional to 11,212.18, 16,817.64 and 3,420.38

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Solution

The fourth proportional to 11,212.18, 16,817.64 and 3,420.38 is: 5,130.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.18 : 16,817.64 = 3,420.38 : x
  2. Step 2: Convert to fraction form
    11,212.18/16,817.64 = 3,420.38/x
  3. Step 3: Cross multiply
    11,212.18x = 16,817.64 × 3,420.38
  4. Step 4: Simplify right side
    11,212.18x = 57,522,719.50
  5. Step 5: Solve for x
    x = 57,522,719.50/11,212.18
  6. Step 6: Final answer
    x = 5,130.38

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1.5x scale

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.