Home / 19,991.72-27,591.89-11,926.41

Finding the Fourth Proportional to 19,991.72, 27,591.89 and 11,926.41

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Solution

The fourth proportional to 19,991.72, 27,591.89 and 11,926.41 is: 16,460.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.72 : 27,591.89 = 11,926.41 : x
  2. Step 2: Convert to fraction form
    19,991.72/27,591.89 = 11,926.41/x
  3. Step 3: Cross multiply
    19,991.72x = 27,591.89 × 11,926.41
  4. Step 4: Simplify right side
    19,991.72x = 329,072,192.81
  5. Step 5: Solve for x
    x = 329,072,192.81/19,991.72
  6. Step 6: Final answer
    x = 16,460.42

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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.