Home / 18,512.43-25,555.59-11,807.25

Finding the Fourth Proportional to 18,512.43, 25,555.59 and 11,807.25

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Solution

The fourth proportional to 18,512.43, 25,555.59 and 11,807.25 is: 16,299.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.43 : 25,555.59 = 11,807.25 : x
  2. Step 2: Convert to fraction form
    18,512.43/25,555.59 = 11,807.25/x
  3. Step 3: Cross multiply
    18,512.43x = 25,555.59 × 11,807.25
  4. Step 4: Simplify right side
    18,512.43x = 301,741,240.03
  5. Step 5: Solve for x
    x = 301,741,240.03/18,512.43
  6. Step 6: Final answer
    x = 16,299.39

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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.