Home / 19,971.20-29,967.60-8,879.60

Finding the Fourth Proportional to 19,971.20, 29,967.60 and 8,879.60

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Solution

The fourth proportional to 19,971.20, 29,967.60 and 8,879.60 is: 13,324.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,971.20 : 29,967.60 = 8,879.60 : x
  2. Step 2: Convert to fraction form
    19,971.20/29,967.60 = 8,879.60/x
  3. Step 3: Cross multiply
    19,971.20x = 29,967.60 × 8,879.60
  4. Step 4: Simplify right side
    19,971.20x = 266,100,300.96
  5. Step 5: Solve for x
    x = 266,100,300.96/19,971.20
  6. Step 6: Final answer
    x = 13,324.20

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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.