Home / 12,490.58-18,734.15-4,170.41

Finding the Fourth Proportional to 12,490.58, 18,734.15 and 4,170.41

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Solution

The fourth proportional to 12,490.58, 18,734.15 and 4,170.41 is: 6,255.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.58 : 18,734.15 = 4,170.41 : x
  2. Step 2: Convert to fraction form
    12,490.58/18,734.15 = 4,170.41/x
  3. Step 3: Cross multiply
    12,490.58x = 18,734.15 × 4,170.41
  4. Step 4: Simplify right side
    12,490.58x = 78,128,971.98
  5. Step 5: Solve for x
    x = 78,128,971.98/12,490.58
  6. Step 6: Final answer
    x = 6,255.03

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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.