Home / 19,840.80-27,380.39-10,889.29

Finding the Fourth Proportional to 19,840.80, 27,380.39 and 10,889.29

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Solution

The fourth proportional to 19,840.80, 27,380.39 and 10,889.29 is: 15,027.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,840.80 : 27,380.39 = 10,889.29 : x
  2. Step 2: Convert to fraction form
    19,840.80/27,380.39 = 10,889.29/x
  3. Step 3: Cross multiply
    19,840.80x = 27,380.39 × 10,889.29
  4. Step 4: Simplify right side
    19,840.80x = 298,153,007.02
  5. Step 5: Solve for x
    x = 298,153,007.02/19,840.80
  6. Step 6: Final answer
    x = 15,027.27

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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.