Home / 20,450.30-30,675.52-6,218.91

Finding the Fourth Proportional to 20,450.30, 30,675.52 and 6,218.91

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Solution

The fourth proportional to 20,450.30, 30,675.52 and 6,218.91 is: 9,328.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.30 : 30,675.52 = 6,218.91 : x
  2. Step 2: Convert to fraction form
    20,450.30/30,675.52 = 6,218.91/x
  3. Step 3: Cross multiply
    20,450.30x = 30,675.52 × 6,218.91
  4. Step 4: Simplify right side
    20,450.30x = 190,768,190.30
  5. Step 5: Solve for x
    x = 190,768,190.30/20,450.30
  6. Step 6: Final answer
    x = 9,328.38

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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.