Home / 12,589.98-18,885.84-4,270.86

Finding the Fourth Proportional to 12,589.98, 18,885.84 and 4,270.86

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Solution

The fourth proportional to 12,589.98, 18,885.84 and 4,270.86 is: 6,406.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,589.98 : 18,885.84 = 4,270.86 : x
  2. Step 2: Convert to fraction form
    12,589.98/18,885.84 = 4,270.86/x
  3. Step 3: Cross multiply
    12,589.98x = 18,885.84 × 4,270.86
  4. Step 4: Simplify right side
    12,589.98x = 80,658,778.62
  5. Step 5: Solve for x
    x = 80,658,778.62/12,589.98
  6. Step 6: Final answer
    x = 6,406.59

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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.