Home / 11,985.69-16,540.33-6,680.84

Finding the Fourth Proportional to 11,985.69, 16,540.33 and 6,680.84

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Solution

The fourth proportional to 11,985.69, 16,540.33 and 6,680.84 is: 9,219.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.69 : 16,540.33 = 6,680.84 : x
  2. Step 2: Convert to fraction form
    11,985.69/16,540.33 = 6,680.84/x
  3. Step 3: Cross multiply
    11,985.69x = 16,540.33 × 6,680.84
  4. Step 4: Simplify right side
    11,985.69x = 110,503,264.87
  5. Step 5: Solve for x
    x = 110,503,264.87/11,985.69
  6. Step 6: Final answer
    x = 9,219.60

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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.