Home / 28,391.45-39,196.40-18,844.25

Finding the Fourth Proportional to 28,391.45, 39,196.40 and 18,844.25

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Solution

The fourth proportional to 28,391.45, 39,196.40 and 18,844.25 is: 26,015.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,391.45 : 39,196.40 = 18,844.25 : x
  2. Step 2: Convert to fraction form
    28,391.45/39,196.40 = 18,844.25/x
  3. Step 3: Cross multiply
    28,391.45x = 39,196.40 × 18,844.25
  4. Step 4: Simplify right side
    28,391.45x = 738,626,470.50
  5. Step 5: Solve for x
    x = 738,626,470.50/28,391.45
  6. Step 6: Final answer
    x = 26,015.81

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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.