Home / 20,409.43-30,621.84-13,897.03

Finding the Fourth Proportional to 20,409.43, 30,621.84 and 13,897.03

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Solution

The fourth proportional to 20,409.43, 30,621.84 and 13,897.03 is: 20,850.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.43 : 30,621.84 = 13,897.03 : x
  2. Step 2: Convert to fraction form
    20,409.43/30,621.84 = 13,897.03/x
  3. Step 3: Cross multiply
    20,409.43x = 30,621.84 × 13,897.03
  4. Step 4: Simplify right side
    20,409.43x = 425,552,629.14
  5. Step 5: Solve for x
    x = 425,552,629.14/20,409.43
  6. Step 6: Final answer
    x = 20,850.78

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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.