Home / 19,840.14-27,379.38-11,456.64

Finding the Fourth Proportional to 19,840.14, 27,379.38 and 11,456.64

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Solution

The fourth proportional to 19,840.14, 27,379.38 and 11,456.64 is: 15,810.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,840.14 : 27,379.38 = 11,456.64 : x
  2. Step 2: Convert to fraction form
    19,840.14/27,379.38 = 11,456.64/x
  3. Step 3: Cross multiply
    19,840.14x = 27,379.38 × 11,456.64
  4. Step 4: Simplify right side
    19,840.14x = 313,675,700.08
  5. Step 5: Solve for x
    x = 313,675,700.08/19,840.14
  6. Step 6: Final answer
    x = 15,810.16

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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.