Home / 28,816.80-43,273.80-18,999.60

Finding the Fourth Proportional to 28,816.80, 43,273.80 and 18,999.60

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Solution

The fourth proportional to 28,816.80, 43,273.80 and 18,999.60 is: 28,531.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,816.80 : 43,273.80 = 18,999.60 : x
  2. Step 2: Convert to fraction form
    28,816.80/43,273.80 = 18,999.60/x
  3. Step 3: Cross multiply
    28,816.80x = 43,273.80 × 18,999.60
  4. Step 4: Simplify right side
    28,816.80x = 822,184,890.48
  5. Step 5: Solve for x
    x = 822,184,890.48/28,816.80
  6. Step 6: Final answer
    x = 28,531.44

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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.