Home / 13,793.63-20,690.49-3,405.38

Finding the Fourth Proportional to 13,793.63, 20,690.49 and 3,405.38

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Solution

The fourth proportional to 13,793.63, 20,690.49 and 3,405.38 is: 5,108.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,793.63 : 20,690.49 = 3,405.38 : x
  2. Step 2: Convert to fraction form
    13,793.63/20,690.49 = 3,405.38/x
  3. Step 3: Cross multiply
    13,793.63x = 20,690.49 × 3,405.38
  4. Step 4: Simplify right side
    13,793.63x = 70,458,877.38
  5. Step 5: Solve for x
    x = 70,458,877.38/13,793.63
  6. Step 6: Final answer
    x = 5,108.08

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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.