Home / 12,123.39-18,177.03-4,728.54

Finding the Fourth Proportional to 12,123.39, 18,177.03 and 4,728.54

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Solution

The fourth proportional to 12,123.39, 18,177.03 and 4,728.54 is: 7,089.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.39 : 18,177.03 = 4,728.54 : x
  2. Step 2: Convert to fraction form
    12,123.39/18,177.03 = 4,728.54/x
  3. Step 3: Cross multiply
    12,123.39x = 18,177.03 × 4,728.54
  4. Step 4: Simplify right side
    12,123.39x = 85,950,813.44
  5. Step 5: Solve for x
    x = 85,950,813.44/12,123.39
  6. Step 6: Final answer
    x = 7,089.67

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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.