Home / 19,749.89-27,257.40-11,255.09

Finding the Fourth Proportional to 19,749.89, 27,257.40 and 11,255.09

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Solution

The fourth proportional to 19,749.89, 27,257.40 and 11,255.09 is: 15,533.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,749.89 : 27,257.40 = 11,255.09 : x
  2. Step 2: Convert to fraction form
    19,749.89/27,257.40 = 11,255.09/x
  3. Step 3: Cross multiply
    19,749.89x = 27,257.40 × 11,255.09
  4. Step 4: Simplify right side
    19,749.89x = 306,784,353.88
  5. Step 5: Solve for x
    x = 306,784,353.88/19,749.89
  6. Step 6: Final answer
    x = 15,533.48

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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.