Home / 18,660.78-27,996.09-5,513.46

Finding the Fourth Proportional to 18,660.78, 27,996.09 and 5,513.46

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Solution

The fourth proportional to 18,660.78, 27,996.09 and 5,513.46 is: 8,271.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.78 : 27,996.09 = 5,513.46 : x
  2. Step 2: Convert to fraction form
    18,660.78/27,996.09 = 5,513.46/x
  3. Step 3: Cross multiply
    18,660.78x = 27,996.09 × 5,513.46
  4. Step 4: Simplify right side
    18,660.78x = 154,355,322.37
  5. Step 5: Solve for x
    x = 154,355,322.37/18,660.78
  6. Step 6: Final answer
    x = 8,271.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.