Home / 12,123.44-16,731.96-8,988.56

Finding the Fourth Proportional to 12,123.44, 16,731.96 and 8,988.56

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Solution

The fourth proportional to 12,123.44, 16,731.96 and 8,988.56 is: 12,405.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.44 : 16,731.96 = 8,988.56 : x
  2. Step 2: Convert to fraction form
    12,123.44/16,731.96 = 8,988.56/x
  3. Step 3: Cross multiply
    12,123.44x = 16,731.96 × 8,988.56
  4. Step 4: Simplify right side
    12,123.44x = 150,396,226.38
  5. Step 5: Solve for x
    x = 150,396,226.38/12,123.44
  6. Step 6: Final answer
    x = 12,405.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.