Home / 12,987.25-19,481.03-3,626.70

Finding the Fourth Proportional to 12,987.25, 19,481.03 and 3,626.70

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Solution

The fourth proportional to 12,987.25, 19,481.03 and 3,626.70 is: 5,440.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987.25 : 19,481.03 = 3,626.70 : x
  2. Step 2: Convert to fraction form
    12,987.25/19,481.03 = 3,626.70/x
  3. Step 3: Cross multiply
    12,987.25x = 19,481.03 × 3,626.70
  4. Step 4: Simplify right side
    12,987.25x = 70,651,851.50
  5. Step 5: Solve for x
    x = 70,651,851.50/12,987.25
  6. Step 6: Final answer
    x = 5,440.09

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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.