Home / 11,985.20-16,539.59-6,679.90

Finding the Fourth Proportional to 11,985.20, 16,539.59 and 6,679.90

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Solution

The fourth proportional to 11,985.20, 16,539.59 and 6,679.90 is: 9,218.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.20 : 16,539.59 = 6,679.90 : x
  2. Step 2: Convert to fraction form
    11,985.20/16,539.59 = 6,679.90/x
  3. Step 3: Cross multiply
    11,985.20x = 16,539.59 × 6,679.90
  4. Step 4: Simplify right side
    11,985.20x = 110,482,844.62
  5. Step 5: Solve for x
    x = 110,482,844.62/11,985.20
  6. Step 6: Final answer
    x = 9,218.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.