Home / 18,660.47-25,749.77-11,105.60

Finding the Fourth Proportional to 18,660.47, 25,749.77 and 11,105.60

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Solution

The fourth proportional to 18,660.47, 25,749.77 and 11,105.60 is: 15,324.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.47 : 25,749.77 = 11,105.60 : x
  2. Step 2: Convert to fraction form
    18,660.47/25,749.77 = 11,105.60/x
  3. Step 3: Cross multiply
    18,660.47x = 25,749.77 × 11,105.60
  4. Step 4: Simplify right side
    18,660.47x = 285,966,461.44
  5. Step 5: Solve for x
    x = 285,966,461.44/18,660.47
  6. Step 6: Final answer
    x = 15,324.72

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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.