Home / 12,123.47-18,183.08-3,238.99

Finding the Fourth Proportional to 12,123.47, 18,183.08 and 3,238.99

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Solution

The fourth proportional to 12,123.47, 18,183.08 and 3,238.99 is: 4,857.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.47 : 18,183.08 = 3,238.99 : x
  2. Step 2: Convert to fraction form
    12,123.47/18,183.08 = 3,238.99/x
  3. Step 3: Cross multiply
    12,123.47x = 18,183.08 × 3,238.99
  4. Step 4: Simplify right side
    12,123.47x = 58,894,776.93
  5. Step 5: Solve for x
    x = 58,894,776.93/12,123.47
  6. Step 6: Final answer
    x = 4,857.91

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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.