Home / 18,542.45-27,785.43-11,880.78

Finding the Fourth Proportional to 18,542.45, 27,785.43 and 11,880.78

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Solution

The fourth proportional to 18,542.45, 27,785.43 and 11,880.78 is: 17,803.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,542.45 : 27,785.43 = 11,880.78 : x
  2. Step 2: Convert to fraction form
    18,542.45/27,785.43 = 11,880.78/x
  3. Step 3: Cross multiply
    18,542.45x = 27,785.43 × 11,880.78
  4. Step 4: Simplify right side
    18,542.45x = 330,112,476.84
  5. Step 5: Solve for x
    x = 330,112,476.84/18,542.45
  6. Step 6: Final answer
    x = 17,803.06

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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.