Home / 28,946.86-43,420.28-8,170.36

Finding the Fourth Proportional to 28,946.86, 43,420.28 and 8,170.36

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Solution

The fourth proportional to 28,946.86, 43,420.28 and 8,170.36 is: 12,255.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,946.86 : 43,420.28 = 8,170.36 : x
  2. Step 2: Convert to fraction form
    28,946.86/43,420.28 = 8,170.36/x
  3. Step 3: Cross multiply
    28,946.86x = 43,420.28 × 8,170.36
  4. Step 4: Simplify right side
    28,946.86x = 354,759,230.78
  5. Step 5: Solve for x
    x = 354,759,230.78/28,946.86
  6. Step 6: Final answer
    x = 12,255.54

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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.