Home / 12,990.02-17,912.12-8,268.26

Finding the Fourth Proportional to 12,990.02, 17,912.12 and 8,268.26

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Solution

The fourth proportional to 12,990.02, 17,912.12 and 8,268.26 is: 11,401.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.02 : 17,912.12 = 8,268.26 : x
  2. Step 2: Convert to fraction form
    12,990.02/17,912.12 = 8,268.26/x
  3. Step 3: Cross multiply
    12,990.02x = 17,912.12 × 8,268.26
  4. Step 4: Simplify right side
    12,990.02x = 148,101,934.41
  5. Step 5: Solve for x
    x = 148,101,934.41/12,990.02
  6. Step 6: Final answer
    x = 11,401.21

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Similar ratio
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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.