Home / 12,123.86-18,183.72-3,356.72

Finding the Fourth Proportional to 12,123.86, 18,183.72 and 3,356.72

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Solution

The fourth proportional to 12,123.86, 18,183.72 and 3,356.72 is: 5,034.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.86 : 18,183.72 = 3,356.72 : x
  2. Step 2: Convert to fraction form
    12,123.86/18,183.72 = 3,356.72/x
  3. Step 3: Cross multiply
    12,123.86x = 18,183.72 × 3,356.72
  4. Step 4: Simplify right side
    12,123.86x = 61,037,646.46
  5. Step 5: Solve for x
    x = 61,037,646.46/12,123.86
  6. Step 6: Final answer
    x = 5,034.51

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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.