Home / 19,760.96-27,272.48-11,379.08

Finding the Fourth Proportional to 19,760.96, 27,272.48 and 11,379.08

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Solution

The fourth proportional to 19,760.96, 27,272.48 and 11,379.08 is: 15,704.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,760.96 : 27,272.48 = 11,379.08 : x
  2. Step 2: Convert to fraction form
    19,760.96/27,272.48 = 11,379.08/x
  3. Step 3: Cross multiply
    19,760.96x = 27,272.48 × 11,379.08
  4. Step 4: Simplify right side
    19,760.96x = 310,335,731.72
  5. Step 5: Solve for x
    x = 310,335,731.72/19,760.96
  6. Step 6: Final answer
    x = 15,704.49

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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.