Home / 18,857.54-28,289.96-6,379.60

Finding the Fourth Proportional to 18,857.54, 28,289.96 and 6,379.60

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Solution

The fourth proportional to 18,857.54, 28,289.96 and 6,379.60 is: 9,570.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857.54 : 28,289.96 = 6,379.60 : x
  2. Step 2: Convert to fraction form
    18,857.54/28,289.96 = 6,379.60/x
  3. Step 3: Cross multiply
    18,857.54x = 28,289.96 × 6,379.60
  4. Step 4: Simplify right side
    18,857.54x = 180,478,563.38
  5. Step 5: Solve for x
    x = 180,478,563.38/18,857.54
  6. Step 6: Final answer
    x = 9,570.63

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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.