Home / 28,785.20-43,188.60-11,267.60

Finding the Fourth Proportional to 28,785.20, 43,188.60 and 11,267.60

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Solution

The fourth proportional to 28,785.20, 43,188.60 and 11,267.60 is: 16,905.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.20 : 43,188.60 = 11,267.60 : x
  2. Step 2: Convert to fraction form
    28,785.20/43,188.60 = 11,267.60/x
  3. Step 3: Cross multiply
    28,785.20x = 43,188.60 × 11,267.60
  4. Step 4: Simplify right side
    28,785.20x = 486,631,869.36
  5. Step 5: Solve for x
    x = 486,631,869.36/28,785.20
  6. Step 6: Final answer
    x = 16,905.63

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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.