Home / 12,123.30-18,184.97-3,803.53

Finding the Fourth Proportional to 12,123.30, 18,184.97 and 3,803.53

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Solution

The fourth proportional to 12,123.30, 18,184.97 and 3,803.53 is: 5,705.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.30 : 18,184.97 = 3,803.53 : x
  2. Step 2: Convert to fraction form
    12,123.30/18,184.97 = 3,803.53/x
  3. Step 3: Cross multiply
    12,123.30x = 18,184.97 × 3,803.53
  4. Step 4: Simplify right side
    12,123.30x = 69,167,078.94
  5. Step 5: Solve for x
    x = 69,167,078.94/12,123.30
  6. Step 6: Final answer
    x = 5,705.30

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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.