Home / 18,865.89-28,295.60-5,716.35

Finding the Fourth Proportional to 18,865.89, 28,295.60 and 5,716.35

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Solution

The fourth proportional to 18,865.89, 28,295.60 and 5,716.35 is: 8,573.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.89 : 28,295.60 = 5,716.35 : x
  2. Step 2: Convert to fraction form
    18,865.89/28,295.60 = 5,716.35/x
  3. Step 3: Cross multiply
    18,865.89x = 28,295.60 × 5,716.35
  4. Step 4: Simplify right side
    18,865.89x = 161,747,524.48
  5. Step 5: Solve for x
    x = 161,747,524.48/18,865.89
  6. Step 6: Final answer
    x = 8,573.54

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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.