Home / 11,985.12-16,539.56-6,680.28

Finding the Fourth Proportional to 11,985.12, 16,539.56 and 6,680.28

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Solution

The fourth proportional to 11,985.12, 16,539.56 and 6,680.28 is: 9,218.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.12 : 16,539.56 = 6,680.28 : x
  2. Step 2: Convert to fraction form
    11,985.12/16,539.56 = 6,680.28/x
  3. Step 3: Cross multiply
    11,985.12x = 16,539.56 × 6,680.28
  4. Step 4: Simplify right side
    11,985.12x = 110,488,858.48
  5. Step 5: Solve for x
    x = 110,488,858.48/11,985.12
  6. Step 6: Final answer
    x = 9,218.84

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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.