Home / 21,832.16-30,128.38-11,896.16

Finding the Fourth Proportional to 21,832.16, 30,128.38 and 11,896.16

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Solution

The fourth proportional to 21,832.16, 30,128.38 and 11,896.16 is: 16,416.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,832.16 : 30,128.38 = 11,896.16 : x
  2. Step 2: Convert to fraction form
    21,832.16/30,128.38 = 11,896.16/x
  3. Step 3: Cross multiply
    21,832.16x = 30,128.38 × 11,896.16
  4. Step 4: Simplify right side
    21,832.16x = 358,412,029.02
  5. Step 5: Solve for x
    x = 358,412,029.02/21,832.16
  6. Step 6: Final answer
    x = 16,416.70

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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.