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Finding the Fourth Proportional to 12,239.41, 18,359.13 and 3,005.41

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Solution

The fourth proportional to 12,239.41, 18,359.13 and 3,005.41 is: 4,508.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.41 : 18,359.13 = 3,005.41 : x
  2. Step 2: Convert to fraction form
    12,239.41/18,359.13 = 3,005.41/x
  3. Step 3: Cross multiply
    12,239.41x = 18,359.13 × 3,005.41
  4. Step 4: Simplify right side
    12,239.41x = 55,176,712.89
  5. Step 5: Solve for x
    x = 55,176,712.89/12,239.41
  6. Step 6: Final answer
    x = 4,508.12

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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.