Home / 12,016.20-18,029.70-4,230.60

Finding the Fourth Proportional to 12,016.20, 18,029.70 and 4,230.60

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Solution

The fourth proportional to 12,016.20, 18,029.70 and 4,230.60 is: 6,347.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,016.20 : 18,029.70 = 4,230.60 : x
  2. Step 2: Convert to fraction form
    12,016.20/18,029.70 = 4,230.60/x
  3. Step 3: Cross multiply
    12,016.20x = 18,029.70 × 4,230.60
  4. Step 4: Simplify right side
    12,016.20x = 76,276,448.82
  5. Step 5: Solve for x
    x = 76,276,448.82/12,016.20
  6. Step 6: Final answer
    x = 6,347.80

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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.