Home / 11,985.22-16,539.64-6,679.90

Finding the Fourth Proportional to 11,985.22, 16,539.64 and 6,679.90

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Solution

The fourth proportional to 11,985.22, 16,539.64 and 6,679.90 is: 9,218.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.22 : 16,539.64 = 6,679.90 : x
  2. Step 2: Convert to fraction form
    11,985.22/16,539.64 = 6,679.90/x
  3. Step 3: Cross multiply
    11,985.22x = 16,539.64 × 6,679.90
  4. Step 4: Simplify right side
    11,985.22x = 110,483,141.24
  5. Step 5: Solve for x
    x = 110,483,141.24/11,985.22
  6. Step 6: Final answer
    x = 9,218.28

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1.5x scale

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.