Home / 19,626.91-27,078.51-11,128.12

Finding the Fourth Proportional to 19,626.91, 27,078.51 and 11,128.12

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Solution

The fourth proportional to 19,626.91, 27,078.51 and 11,128.12 is: 15,353.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,626.91 : 27,078.51 = 11,128.12 : x
  2. Step 2: Convert to fraction form
    19,626.91/27,078.51 = 11,128.12/x
  3. Step 3: Cross multiply
    19,626.91x = 27,078.51 × 11,128.12
  4. Step 4: Simplify right side
    19,626.91x = 301,332,908.70
  5. Step 5: Solve for x
    x = 301,332,908.70/19,626.91
  6. Step 6: Final answer
    x = 15,353.05

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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.