Home / 12,659.22-18,987.39-3,424.50

Finding the Fourth Proportional to 12,659.22, 18,987.39 and 3,424.50

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Solution

The fourth proportional to 12,659.22, 18,987.39 and 3,424.50 is: 5,136.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.22 : 18,987.39 = 3,424.50 : x
  2. Step 2: Convert to fraction form
    12,659.22/18,987.39 = 3,424.50/x
  3. Step 3: Cross multiply
    12,659.22x = 18,987.39 × 3,424.50
  4. Step 4: Simplify right side
    12,659.22x = 65,022,317.06
  5. Step 5: Solve for x
    x = 65,022,317.06/12,659.22
  6. Step 6: Final answer
    x = 5,136.36

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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.