Home / 19,896.16-27,456.72-11,512.80

Finding the Fourth Proportional to 19,896.16, 27,456.72 and 11,512.80

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Solution

The fourth proportional to 19,896.16, 27,456.72 and 11,512.80 is: 15,887.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,896.16 : 27,456.72 = 11,512.80 : x
  2. Step 2: Convert to fraction form
    19,896.16/27,456.72 = 11,512.80/x
  3. Step 3: Cross multiply
    19,896.16x = 27,456.72 × 11,512.80
  4. Step 4: Simplify right side
    19,896.16x = 316,103,726.02
  5. Step 5: Solve for x
    x = 316,103,726.02/19,896.16
  6. Step 6: Final answer
    x = 15,887.68

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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.