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Finding the Fourth Proportional to 13,992.95, 20,982.04 and 4,130.80

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Solution

The fourth proportional to 13,992.95, 20,982.04 and 4,130.80 is: 6,194.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.95 : 20,982.04 = 4,130.80 : x
  2. Step 2: Convert to fraction form
    13,992.95/20,982.04 = 4,130.80/x
  3. Step 3: Cross multiply
    13,992.95x = 20,982.04 × 4,130.80
  4. Step 4: Simplify right side
    13,992.95x = 86,672,548.05
  5. Step 5: Solve for x
    x = 86,672,548.05/13,992.95
  6. Step 6: Final answer
    x = 6,194.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.