Home / 18,790.31-28,182.42-5,640.37

Finding the Fourth Proportional to 18,790.31, 28,182.42 and 5,640.37

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Solution

The fourth proportional to 18,790.31, 28,182.42 and 5,640.37 is: 8,459.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.31 : 28,182.42 = 5,640.37 : x
  2. Step 2: Convert to fraction form
    18,790.31/28,182.42 = 5,640.37/x
  3. Step 3: Cross multiply
    18,790.31x = 28,182.42 × 5,640.37
  4. Step 4: Simplify right side
    18,790.31x = 158,959,205.84
  5. Step 5: Solve for x
    x = 158,959,205.84/18,790.31
  6. Step 6: Final answer
    x = 8,459.64

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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.