Home / 12,211.57-18,305.01-4,813.15

Finding the Fourth Proportional to 12,211.57, 18,305.01 and 4,813.15

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Solution

The fourth proportional to 12,211.57, 18,305.01 and 4,813.15 is: 7,214.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.57 : 18,305.01 = 4,813.15 : x
  2. Step 2: Convert to fraction form
    12,211.57/18,305.01 = 4,813.15/x
  3. Step 3: Cross multiply
    12,211.57x = 18,305.01 × 4,813.15
  4. Step 4: Simplify right side
    12,211.57x = 88,104,758.88
  5. Step 5: Solve for x
    x = 88,104,758.88/12,211.57
  6. Step 6: Final answer
    x = 7,214.86

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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.