Home / 12,906.14-17,777.29-9,122.80

Finding the Fourth Proportional to 12,906.14, 17,777.29 and 9,122.80

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Solution

The fourth proportional to 12,906.14, 17,777.29 and 9,122.80 is: 12,566.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,906.14 : 17,777.29 = 9,122.80 : x
  2. Step 2: Convert to fraction form
    12,906.14/17,777.29 = 9,122.80/x
  3. Step 3: Cross multiply
    12,906.14x = 17,777.29 × 9,122.80
  4. Step 4: Simplify right side
    12,906.14x = 162,178,571.15
  5. Step 5: Solve for x
    x = 162,178,571.15/12,906.14
  6. Step 6: Final answer
    x = 12,566.00

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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.