Home / 12,369.23-18,563.87-6,128.99

Finding the Fourth Proportional to 12,369.23, 18,563.87 and 6,128.99

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Solution

The fourth proportional to 12,369.23, 18,563.87 and 6,128.99 is: 9,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,369.23 : 18,563.87 = 6,128.99 : x
  2. Step 2: Convert to fraction form
    12,369.23/18,563.87 = 6,128.99/x
  3. Step 3: Cross multiply
    12,369.23x = 18,563.87 × 6,128.99
  4. Step 4: Simplify right side
    12,369.23x = 113,777,773.59
  5. Step 5: Solve for x
    x = 113,777,773.59/12,369.23
  6. Step 6: Final answer
    x = 9,198.45

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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.