Home / 12,123.10-18,177.08-5,458.22

Finding the Fourth Proportional to 12,123.10, 18,177.08 and 5,458.22

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Solution

The fourth proportional to 12,123.10, 18,177.08 and 5,458.22 is: 8,183.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.10 : 18,177.08 = 5,458.22 : x
  2. Step 2: Convert to fraction form
    12,123.10/18,177.08 = 5,458.22/x
  3. Step 3: Cross multiply
    12,123.10x = 18,177.08 × 5,458.22
  4. Step 4: Simplify right side
    12,123.10x = 99,214,451.59
  5. Step 5: Solve for x
    x = 99,214,451.59/12,123.10
  6. Step 6: Final answer
    x = 8,183.92

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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.