Home / 12,555.12-18,829.44-4,234.80

Finding the Fourth Proportional to 12,555.12, 18,829.44 and 4,234.80

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Solution

The fourth proportional to 12,555.12, 18,829.44 and 4,234.80 is: 6,351.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.12 : 18,829.44 = 4,234.80 : x
  2. Step 2: Convert to fraction form
    12,555.12/18,829.44 = 4,234.80/x
  3. Step 3: Cross multiply
    12,555.12x = 18,829.44 × 4,234.80
  4. Step 4: Simplify right side
    12,555.12x = 79,738,912.51
  5. Step 5: Solve for x
    x = 79,738,912.51/12,555.12
  6. Step 6: Final answer
    x = 6,351.11

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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.