Home / 28,558.21-42,847.46-12,761.79

Finding the Fourth Proportional to 28,558.21, 42,847.46 and 12,761.79

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Solution

The fourth proportional to 28,558.21, 42,847.46 and 12,761.79 is: 19,147.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.21 : 42,847.46 = 12,761.79 : x
  2. Step 2: Convert to fraction form
    28,558.21/42,847.46 = 12,761.79/x
  3. Step 3: Cross multiply
    28,558.21x = 42,847.46 × 12,761.79
  4. Step 4: Simplify right side
    28,558.21x = 546,810,222.74
  5. Step 5: Solve for x
    x = 546,810,222.74/28,558.21
  6. Step 6: Final answer
    x = 19,147.22

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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.