Home / 12,218.14-16,860.56-6,912.84

Finding the Fourth Proportional to 12,218.14, 16,860.56 and 6,912.84

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Solution

The fourth proportional to 12,218.14, 16,860.56 and 6,912.84 is: 9,539.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.14 : 16,860.56 = 6,912.84 : x
  2. Step 2: Convert to fraction form
    12,218.14/16,860.56 = 6,912.84/x
  3. Step 3: Cross multiply
    12,218.14x = 16,860.56 × 6,912.84
  4. Step 4: Simplify right side
    12,218.14x = 116,554,382.25
  5. Step 5: Solve for x
    x = 116,554,382.25/12,218.14
  6. Step 6: Final answer
    x = 9,539.45

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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.