Home / 12,639.12-17,423.49-8,850.33

Finding the Fourth Proportional to 12,639.12, 17,423.49 and 8,850.33

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Solution

The fourth proportional to 12,639.12, 17,423.49 and 8,850.33 is: 12,200.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.12 : 17,423.49 = 8,850.33 : x
  2. Step 2: Convert to fraction form
    12,639.12/17,423.49 = 8,850.33/x
  3. Step 3: Cross multiply
    12,639.12x = 17,423.49 × 8,850.33
  4. Step 4: Simplify right side
    12,639.12x = 154,203,636.25
  5. Step 5: Solve for x
    x = 154,203,636.25/12,639.12
  6. Step 6: Final answer
    x = 12,200.50

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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.