Home / 12,172.74-18,235.41-8,000.16

Finding the Fourth Proportional to 12,172.74, 18,235.41 and 8,000.16

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Solution

The fourth proportional to 12,172.74, 18,235.41 and 8,000.16 is: 11,984.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.74 : 18,235.41 = 8,000.16 : x
  2. Step 2: Convert to fraction form
    12,172.74/18,235.41 = 8,000.16/x
  3. Step 3: Cross multiply
    12,172.74x = 18,235.41 × 8,000.16
  4. Step 4: Simplify right side
    12,172.74x = 145,886,197.67
  5. Step 5: Solve for x
    x = 145,886,197.67/12,172.74
  6. Step 6: Final answer
    x = 11,984.66

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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.