Home / 12,015.67-18,020.33-8,266.66

Finding the Fourth Proportional to 12,015.67, 18,020.33 and 8,266.66

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Solution

The fourth proportional to 12,015.67, 18,020.33 and 8,266.66 is: 12,397.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.67 : 18,020.33 = 8,266.66 : x
  2. Step 2: Convert to fraction form
    12,015.67/18,020.33 = 8,266.66/x
  3. Step 3: Cross multiply
    12,015.67x = 18,020.33 × 8,266.66
  4. Step 4: Simplify right side
    12,015.67x = 148,967,941.20
  5. Step 5: Solve for x
    x = 148,967,941.20/12,015.67
  6. Step 6: Final answer
    x = 12,397.81

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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.