Home / 18,805.20-28,199.70-9,441.60

Finding the Fourth Proportional to 18,805.20, 28,199.70 and 9,441.60

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Solution

The fourth proportional to 18,805.20, 28,199.70 and 9,441.60 is: 14,158.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.20 : 28,199.70 = 9,441.60 : x
  2. Step 2: Convert to fraction form
    18,805.20/28,199.70 = 9,441.60/x
  3. Step 3: Cross multiply
    18,805.20x = 28,199.70 × 9,441.60
  4. Step 4: Simplify right side
    18,805.20x = 266,250,287.52
  5. Step 5: Solve for x
    x = 266,250,287.52/18,805.20
  6. Step 6: Final answer
    x = 14,158.33

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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.