Home / 13,447.94-20,122.14-8,114.21

Finding the Fourth Proportional to 13,447.94, 20,122.14 and 8,114.21

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Solution

The fourth proportional to 13,447.94, 20,122.14 and 8,114.21 is: 12,141.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.94 : 20,122.14 = 8,114.21 : x
  2. Step 2: Convert to fraction form
    13,447.94/20,122.14 = 8,114.21/x
  3. Step 3: Cross multiply
    13,447.94x = 20,122.14 × 8,114.21
  4. Step 4: Simplify right side
    13,447.94x = 163,275,169.00
  5. Step 5: Solve for x
    x = 163,275,169.00/13,447.94
  6. Step 6: Final answer
    x = 12,141.28

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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.