Home / 28,971.56-43,466.09-12,112.76

Finding the Fourth Proportional to 28,971.56, 43,466.09 and 12,112.76

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Solution

The fourth proportional to 28,971.56, 43,466.09 and 12,112.76 is: 18,172.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.56 : 43,466.09 = 12,112.76 : x
  2. Step 2: Convert to fraction form
    28,971.56/43,466.09 = 12,112.76/x
  3. Step 3: Cross multiply
    28,971.56x = 43,466.09 × 12,112.76
  4. Step 4: Simplify right side
    28,971.56x = 526,494,038.41
  5. Step 5: Solve for x
    x = 526,494,038.41/28,971.56
  6. Step 6: Final answer
    x = 18,172.79

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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.