Home / 19,957.78-27,540.32-11,005.09

Finding the Fourth Proportional to 19,957.78, 27,540.32 and 11,005.09

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Solution

The fourth proportional to 19,957.78, 27,540.32 and 11,005.09 is: 15,186.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,957.78 : 27,540.32 = 11,005.09 : x
  2. Step 2: Convert to fraction form
    19,957.78/27,540.32 = 11,005.09/x
  3. Step 3: Cross multiply
    19,957.78x = 27,540.32 × 11,005.09
  4. Step 4: Simplify right side
    19,957.78x = 303,083,700.23
  5. Step 5: Solve for x
    x = 303,083,700.23/19,957.78
  6. Step 6: Final answer
    x = 15,186.24

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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.