Home / 19,811.64-27,338.94-10,857.36

Finding the Fourth Proportional to 19,811.64, 27,338.94 and 10,857.36

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Solution

The fourth proportional to 19,811.64, 27,338.94 and 10,857.36 is: 14,982.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.64 : 27,338.94 = 10,857.36 : x
  2. Step 2: Convert to fraction form
    19,811.64/27,338.94 = 10,857.36/x
  3. Step 3: Cross multiply
    19,811.64x = 27,338.94 × 10,857.36
  4. Step 4: Simplify right side
    19,811.64x = 296,828,713.60
  5. Step 5: Solve for x
    x = 296,828,713.60/19,811.64
  6. Step 6: Final answer
    x = 14,982.54

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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.