Home / 19,760.66-27,272.19-12,960.39

Finding the Fourth Proportional to 19,760.66, 27,272.19 and 12,960.39

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Solution

The fourth proportional to 19,760.66, 27,272.19 and 12,960.39 is: 17,886.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,760.66 : 27,272.19 = 12,960.39 : x
  2. Step 2: Convert to fraction form
    19,760.66/27,272.19 = 12,960.39/x
  3. Step 3: Cross multiply
    19,760.66x = 27,272.19 × 12,960.39
  4. Step 4: Simplify right side
    19,760.66x = 353,458,218.55
  5. Step 5: Solve for x
    x = 353,458,218.55/19,760.66
  6. Step 6: Final answer
    x = 17,886.97

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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.