Home / 11,985.40-16,539.69-6,680.44

Finding the Fourth Proportional to 11,985.40, 16,539.69 and 6,680.44

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Solution

The fourth proportional to 11,985.40, 16,539.69 and 6,680.44 is: 9,218.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.40 : 16,539.69 = 6,680.44 : x
  2. Step 2: Convert to fraction form
    11,985.40/16,539.69 = 6,680.44/x
  3. Step 3: Cross multiply
    11,985.40x = 16,539.69 × 6,680.44
  4. Step 4: Simplify right side
    11,985.40x = 110,492,406.66
  5. Step 5: Solve for x
    x = 110,492,406.66/11,985.40
  6. Step 6: Final answer
    x = 9,218.92

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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.