Home / 21,086.64-29,100.79-11,656.08

Finding the Fourth Proportional to 21,086.64, 29,100.79 and 11,656.08

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Solution

The fourth proportional to 21,086.64, 29,100.79 and 11,656.08 is: 16,086.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.64 : 29,100.79 = 11,656.08 : x
  2. Step 2: Convert to fraction form
    21,086.64/29,100.79 = 11,656.08/x
  3. Step 3: Cross multiply
    21,086.64x = 29,100.79 × 11,656.08
  4. Step 4: Simplify right side
    21,086.64x = 339,201,136.30
  5. Step 5: Solve for x
    x = 339,201,136.30/21,086.64
  6. Step 6: Final answer
    x = 16,086.07

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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.