Home / 18,790.71-28,190.39-5,643.33

Finding the Fourth Proportional to 18,790.71, 28,190.39 and 5,643.33

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Solution

The fourth proportional to 18,790.71, 28,190.39 and 5,643.33 is: 8,466.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.71 : 28,190.39 = 5,643.33 : x
  2. Step 2: Convert to fraction form
    18,790.71/28,190.39 = 5,643.33/x
  3. Step 3: Cross multiply
    18,790.71x = 28,190.39 × 5,643.33
  4. Step 4: Simplify right side
    18,790.71x = 159,087,673.60
  5. Step 5: Solve for x
    x = 159,087,673.60/18,790.71
  6. Step 6: Final answer
    x = 8,466.29

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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.