Home / 18,765.45-28,146.09-4,725.48

Finding the Fourth Proportional to 18,765.45, 28,146.09 and 4,725.48

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Solution

The fourth proportional to 18,765.45, 28,146.09 and 4,725.48 is: 7,087.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.45 : 28,146.09 = 4,725.48 : x
  2. Step 2: Convert to fraction form
    18,765.45/28,146.09 = 4,725.48/x
  3. Step 3: Cross multiply
    18,765.45x = 28,146.09 × 4,725.48
  4. Step 4: Simplify right side
    18,765.45x = 133,003,785.37
  5. Step 5: Solve for x
    x = 133,003,785.37/18,765.45
  6. Step 6: Final answer
    x = 7,087.69

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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.