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Finding the Fourth Proportional to 12,029.72, 18,009.39 and 7,016.76

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Solution

The fourth proportional to 12,029.72, 18,009.39 and 7,016.76 is: 10,504.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,029.72 : 18,009.39 = 7,016.76 : x
  2. Step 2: Convert to fraction form
    12,029.72/18,009.39 = 7,016.76/x
  3. Step 3: Cross multiply
    12,029.72x = 18,009.39 × 7,016.76
  4. Step 4: Simplify right side
    12,029.72x = 126,367,554.22
  5. Step 5: Solve for x
    x = 126,367,554.22/12,029.72
  6. Step 6: Final answer
    x = 10,504.62

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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.