Home / 30,551.82-45,826.80-20,621.85

Finding the Fourth Proportional to 30,551.82, 45,826.80 and 20,621.85

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Solution

The fourth proportional to 30,551.82, 45,826.80 and 20,621.85 is: 30,932.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,551.82 : 45,826.80 = 20,621.85 : x
  2. Step 2: Convert to fraction form
    30,551.82/45,826.80 = 20,621.85/x
  3. Step 3: Cross multiply
    30,551.82x = 45,826.80 × 20,621.85
  4. Step 4: Simplify right side
    30,551.82x = 945,033,555.62
  5. Step 5: Solve for x
    x = 945,033,555.62/30,551.82
  6. Step 6: Final answer
    x = 30,932.15

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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.