Home / 19,636.92-27,099.50-11,138.81

Finding the Fourth Proportional to 19,636.92, 27,099.50 and 11,138.81

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Solution

The fourth proportional to 19,636.92, 27,099.50 and 11,138.81 is: 15,371.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,636.92 : 27,099.50 = 11,138.81 : x
  2. Step 2: Convert to fraction form
    19,636.92/27,099.50 = 11,138.81/x
  3. Step 3: Cross multiply
    19,636.92x = 27,099.50 × 11,138.81
  4. Step 4: Simplify right side
    19,636.92x = 301,855,990.40
  5. Step 5: Solve for x
    x = 301,855,990.40/19,636.92
  6. Step 6: Final answer
    x = 15,371.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.