Home / 13,368.89-20,042.06-8,427.64

Finding the Fourth Proportional to 13,368.89, 20,042.06 and 8,427.64

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Solution

The fourth proportional to 13,368.89, 20,042.06 and 8,427.64 is: 12,634.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.89 : 20,042.06 = 8,427.64 : x
  2. Step 2: Convert to fraction form
    13,368.89/20,042.06 = 8,427.64/x
  3. Step 3: Cross multiply
    13,368.89x = 20,042.06 × 8,427.64
  4. Step 4: Simplify right side
    13,368.89x = 168,907,174.30
  5. Step 5: Solve for x
    x = 168,907,174.30/13,368.89
  6. Step 6: Final answer
    x = 12,634.34

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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.