Home / 28,949.88-43,445.56-12,321.60

Finding the Fourth Proportional to 28,949.88, 43,445.56 and 12,321.60

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Solution

The fourth proportional to 28,949.88, 43,445.56 and 12,321.60 is: 18,491.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,949.88 : 43,445.56 = 12,321.60 : x
  2. Step 2: Convert to fraction form
    28,949.88/43,445.56 = 12,321.60/x
  3. Step 3: Cross multiply
    28,949.88x = 43,445.56 × 12,321.60
  4. Step 4: Simplify right side
    28,949.88x = 535,318,812.10
  5. Step 5: Solve for x
    x = 535,318,812.10/28,949.88
  6. Step 6: Final answer
    x = 18,491.23

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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.