Home / 21,314.62-29,396.94-20,453.48

Finding the Fourth Proportional to 21,314.62, 29,396.94 and 20,453.48

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Solution

The fourth proportional to 21,314.62, 29,396.94 and 20,453.48 is: 28,209.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.62 : 29,396.94 = 20,453.48 : x
  2. Step 2: Convert to fraction form
    21,314.62/29,396.94 = 20,453.48/x
  3. Step 3: Cross multiply
    21,314.62x = 29,396.94 × 20,453.48
  4. Step 4: Simplify right side
    21,314.62x = 601,269,724.35
  5. Step 5: Solve for x
    x = 601,269,724.35/21,314.62
  6. Step 6: Final answer
    x = 28,209.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.