Home / 18,639.92-27,916.68-11,228.18

Finding the Fourth Proportional to 18,639.92, 27,916.68 and 11,228.18

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Solution

The fourth proportional to 18,639.92, 27,916.68 and 11,228.18 is: 16,816.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.92 : 27,916.68 = 11,228.18 : x
  2. Step 2: Convert to fraction form
    18,639.92/27,916.68 = 11,228.18/x
  3. Step 3: Cross multiply
    18,639.92x = 27,916.68 × 11,228.18
  4. Step 4: Simplify right side
    18,639.92x = 313,453,508.04
  5. Step 5: Solve for x
    x = 313,453,508.04/18,639.92
  6. Step 6: Final answer
    x = 16,816.25

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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.