Home / 19,840.11-27,379.35-11,342.42

Finding the Fourth Proportional to 19,840.11, 27,379.35 and 11,342.42

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Solution

The fourth proportional to 19,840.11, 27,379.35 and 11,342.42 is: 15,652.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,840.11 : 27,379.35 = 11,342.42 : x
  2. Step 2: Convert to fraction form
    19,840.11/27,379.35 = 11,342.42/x
  3. Step 3: Cross multiply
    19,840.11x = 27,379.35 × 11,342.42
  4. Step 4: Simplify right side
    19,840.11x = 310,548,087.03
  5. Step 5: Solve for x
    x = 310,548,087.03/19,840.11
  6. Step 6: Final answer
    x = 15,652.54

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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.