Home / 12,235.05-16,880.49-8,458.41

Finding the Fourth Proportional to 12,235.05, 16,880.49 and 8,458.41

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Solution

The fourth proportional to 12,235.05, 16,880.49 and 8,458.41 is: 11,669.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235.05 : 16,880.49 = 8,458.41 : x
  2. Step 2: Convert to fraction form
    12,235.05/16,880.49 = 8,458.41/x
  3. Step 3: Cross multiply
    12,235.05x = 16,880.49 × 8,458.41
  4. Step 4: Simplify right side
    12,235.05x = 142,782,105.42
  5. Step 5: Solve for x
    x = 142,782,105.42/12,235.05
  6. Step 6: Final answer
    x = 11,669.92

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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.