Home / 11,237.20-16,861.20-8,603.80

Finding the Fourth Proportional to 11,237.20, 16,861.20 and 8,603.80

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Solution

The fourth proportional to 11,237.20, 16,861.20 and 8,603.80 is: 12,909.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,237.20 : 16,861.20 = 8,603.80 : x
  2. Step 2: Convert to fraction form
    11,237.20/16,861.20 = 8,603.80/x
  3. Step 3: Cross multiply
    11,237.20x = 16,861.20 × 8,603.80
  4. Step 4: Simplify right side
    11,237.20x = 145,070,392.56
  5. Step 5: Solve for x
    x = 145,070,392.56/11,237.20
  6. Step 6: Final answer
    x = 12,909.83

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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.