Home / 13,020.08-19,530.12-3,659.72

Finding the Fourth Proportional to 13,020.08, 19,530.12 and 3,659.72

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Solution

The fourth proportional to 13,020.08, 19,530.12 and 3,659.72 is: 5,489.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.08 : 19,530.12 = 3,659.72 : x
  2. Step 2: Convert to fraction form
    13,020.08/19,530.12 = 3,659.72/x
  3. Step 3: Cross multiply
    13,020.08x = 19,530.12 × 3,659.72
  4. Step 4: Simplify right side
    13,020.08x = 71,474,770.77
  5. Step 5: Solve for x
    x = 71,474,770.77/13,020.08
  6. Step 6: Final answer
    x = 5,489.58

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Similar ratio
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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.