Home / 28,917.36-43,372.20-8,142.48

Finding the Fourth Proportional to 28,917.36, 43,372.20 and 8,142.48

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Solution

The fourth proportional to 28,917.36, 43,372.20 and 8,142.48 is: 12,212.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917.36 : 43,372.20 = 8,142.48 : x
  2. Step 2: Convert to fraction form
    28,917.36/43,372.20 = 8,142.48/x
  3. Step 3: Cross multiply
    28,917.36x = 43,372.20 × 8,142.48
  4. Step 4: Simplify right side
    28,917.36x = 353,157,271.06
  5. Step 5: Solve for x
    x = 353,157,271.06/28,917.36
  6. Step 6: Final answer
    x = 12,212.64

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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.