Home / 13,072.20-19,608.30-12,561.90

Finding the Fourth Proportional to 13,072.20, 19,608.30 and 12,561.90

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Solution

The fourth proportional to 13,072.20, 19,608.30 and 12,561.90 is: 18,842.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.20 : 19,608.30 = 12,561.90 : x
  2. Step 2: Convert to fraction form
    13,072.20/19,608.30 = 12,561.90/x
  3. Step 3: Cross multiply
    13,072.20x = 19,608.30 × 12,561.90
  4. Step 4: Simplify right side
    13,072.20x = 246,317,503.77
  5. Step 5: Solve for x
    x = 246,317,503.77/13,072.20
  6. Step 6: Final answer
    x = 18,842.85

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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.