Home / 20,091.51-27,731.75-12,533.36

Finding the Fourth Proportional to 20,091.51, 27,731.75 and 12,533.36

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Solution

The fourth proportional to 20,091.51, 27,731.75 and 12,533.36 is: 17,299.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.51 : 27,731.75 = 12,533.36 : x
  2. Step 2: Convert to fraction form
    20,091.51/27,731.75 = 12,533.36/x
  3. Step 3: Cross multiply
    20,091.51x = 27,731.75 × 12,533.36
  4. Step 4: Simplify right side
    20,091.51x = 347,571,804.85
  5. Step 5: Solve for x
    x = 347,571,804.85/20,091.51
  6. Step 6: Final answer
    x = 17,299.44

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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.