Home / 13,391.69-20,086.02-3,396.40

Finding the Fourth Proportional to 13,391.69, 20,086.02 and 3,396.40

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Solution

The fourth proportional to 13,391.69, 20,086.02 and 3,396.40 is: 5,094.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.69 : 20,086.02 = 3,396.40 : x
  2. Step 2: Convert to fraction form
    13,391.69/20,086.02 = 3,396.40/x
  3. Step 3: Cross multiply
    13,391.69x = 20,086.02 × 3,396.40
  4. Step 4: Simplify right side
    13,391.69x = 68,220,108.11
  5. Step 5: Solve for x
    x = 68,220,108.11/13,391.69
  6. Step 6: Final answer
    x = 5,094.21

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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.