Home / 30,361.85-45,529.39-13,721.21

Finding the Fourth Proportional to 30,361.85, 45,529.39 and 13,721.21

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Solution

The fourth proportional to 30,361.85, 45,529.39 and 13,721.21 is: 20,575.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,361.85 : 45,529.39 = 13,721.21 : x
  2. Step 2: Convert to fraction form
    30,361.85/45,529.39 = 13,721.21/x
  3. Step 3: Cross multiply
    30,361.85x = 45,529.39 × 13,721.21
  4. Step 4: Simplify right side
    30,361.85x = 624,718,321.36
  5. Step 5: Solve for x
    x = 624,718,321.36/30,361.85
  6. Step 6: Final answer
    x = 20,575.77

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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.