Home / 20,447.48-30,639.94-13,759.22

Finding the Fourth Proportional to 20,447.48, 30,639.94 and 13,759.22

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Solution

The fourth proportional to 20,447.48, 30,639.94 and 13,759.22 is: 20,617.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.48 : 30,639.94 = 13,759.22 : x
  2. Step 2: Convert to fraction form
    20,447.48/30,639.94 = 13,759.22/x
  3. Step 3: Cross multiply
    20,447.48x = 30,639.94 × 13,759.22
  4. Step 4: Simplify right side
    20,447.48x = 421,581,675.25
  5. Step 5: Solve for x
    x = 421,581,675.25/20,447.48
  6. Step 6: Final answer
    x = 20,617.78

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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.