Home / 21,025.80-29,014.20-12,072.06

Finding the Fourth Proportional to 21,025.80, 29,014.20 and 12,072.06

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Solution

The fourth proportional to 21,025.80, 29,014.20 and 12,072.06 is: 16,658.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.80 : 29,014.20 = 12,072.06 : x
  2. Step 2: Convert to fraction form
    21,025.80/29,014.20 = 12,072.06/x
  3. Step 3: Cross multiply
    21,025.80x = 29,014.20 × 12,072.06
  4. Step 4: Simplify right side
    21,025.80x = 350,261,163.25
  5. Step 5: Solve for x
    x = 350,261,163.25/21,025.80
  6. Step 6: Final answer
    x = 16,658.64

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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.