Home / 11,985.20-17,985.80-4,194

Finding the Fourth Proportional to 11,985.20, 17,985.80 and 4,194

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Solution

The fourth proportional to 11,985.20, 17,985.80 and 4,194 is: 6,293.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.20 : 17,985.80 = 4,194 : x
  2. Step 2: Convert to fraction form
    11,985.20/17,985.80 = 4,194/x
  3. Step 3: Cross multiply
    11,985.20x = 17,985.80 × 4,194
  4. Step 4: Simplify right side
    11,985.20x = 75,432,445.20
  5. Step 5: Solve for x
    x = 75,432,445.20/11,985.20
  6. Step 6: Final answer
    x = 6,293.80

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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.