Home / 12,808.90-19,211.60-3,449.35

Finding the Fourth Proportional to 12,808.90, 19,211.60 and 3,449.35

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Solution

The fourth proportional to 12,808.90, 19,211.60 and 3,449.35 is: 5,173.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.90 : 19,211.60 = 3,449.35 : x
  2. Step 2: Convert to fraction form
    12,808.90/19,211.60 = 3,449.35/x
  3. Step 3: Cross multiply
    12,808.90x = 19,211.60 × 3,449.35
  4. Step 4: Simplify right side
    12,808.90x = 66,267,515.21
  5. Step 5: Solve for x
    x = 66,267,515.21/12,808.90
  6. Step 6: Final answer
    x = 5,173.55

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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.