Home / 13,420.26-19,961.43-13,375.31

Finding the Fourth Proportional to 13,420.26, 19,961.43 and 13,375.31

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Solution

The fourth proportional to 13,420.26, 19,961.43 and 13,375.31 is: 19,894.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.26 : 19,961.43 = 13,375.31 : x
  2. Step 2: Convert to fraction form
    13,420.26/19,961.43 = 13,375.31/x
  3. Step 3: Cross multiply
    13,420.26x = 19,961.43 × 13,375.31
  4. Step 4: Simplify right side
    13,420.26x = 266,990,164.33
  5. Step 5: Solve for x
    x = 266,990,164.33/13,420.26
  6. Step 6: Final answer
    x = 19,894.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.