Home / 13,618.08-20,428.54-3,757.36

Finding the Fourth Proportional to 13,618.08, 20,428.54 and 3,757.36

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Solution

The fourth proportional to 13,618.08, 20,428.54 and 3,757.36 is: 5,636.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.08 : 20,428.54 = 3,757.36 : x
  2. Step 2: Convert to fraction form
    13,618.08/20,428.54 = 3,757.36/x
  3. Step 3: Cross multiply
    13,618.08x = 20,428.54 × 3,757.36
  4. Step 4: Simplify right side
    13,618.08x = 76,757,379.05
  5. Step 5: Solve for x
    x = 76,757,379.05/13,618.08
  6. Step 6: Final answer
    x = 5,636.43

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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.