Home / 11,969.84-16,518.11-6,665.15

Finding the Fourth Proportional to 11,969.84, 16,518.11 and 6,665.15

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Solution

The fourth proportional to 11,969.84, 16,518.11 and 6,665.15 is: 9,197.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,969.84 : 16,518.11 = 6,665.15 : x
  2. Step 2: Convert to fraction form
    11,969.84/16,518.11 = 6,665.15/x
  3. Step 3: Cross multiply
    11,969.84x = 16,518.11 × 6,665.15
  4. Step 4: Simplify right side
    11,969.84x = 110,095,564.95
  5. Step 5: Solve for x
    x = 110,095,564.95/11,969.84
  6. Step 6: Final answer
    x = 9,197.75

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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.