Home / 12,988.26-19,486.92-4,104.96

Finding the Fourth Proportional to 12,988.26, 19,486.92 and 4,104.96

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Solution

The fourth proportional to 12,988.26, 19,486.92 and 4,104.96 is: 6,158.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.26 : 19,486.92 = 4,104.96 : x
  2. Step 2: Convert to fraction form
    12,988.26/19,486.92 = 4,104.96/x
  3. Step 3: Cross multiply
    12,988.26x = 19,486.92 × 4,104.96
  4. Step 4: Simplify right side
    12,988.26x = 79,993,027.12
  5. Step 5: Solve for x
    x = 79,993,027.12/12,988.26
  6. Step 6: Final answer
    x = 6,158.87

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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.