Home / 12,379.86-18,570.87-5,450.58

Finding the Fourth Proportional to 12,379.86, 18,570.87 and 5,450.58

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Solution

The fourth proportional to 12,379.86, 18,570.87 and 5,450.58 is: 8,176.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379.86 : 18,570.87 = 5,450.58 : x
  2. Step 2: Convert to fraction form
    12,379.86/18,570.87 = 5,450.58/x
  3. Step 3: Cross multiply
    12,379.86x = 18,570.87 × 5,450.58
  4. Step 4: Simplify right side
    12,379.86x = 101,222,012.60
  5. Step 5: Solve for x
    x = 101,222,012.60/12,379.86
  6. Step 6: Final answer
    x = 8,176.35

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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.