Home / 12,630.40-18,916.44-8,236.96

Finding the Fourth Proportional to 12,630.40, 18,916.44 and 8,236.96

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Solution

The fourth proportional to 12,630.40, 18,916.44 and 8,236.96 is: 12,336.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.40 : 18,916.44 = 8,236.96 : x
  2. Step 2: Convert to fraction form
    12,630.40/18,916.44 = 8,236.96/x
  3. Step 3: Cross multiply
    12,630.40x = 18,916.44 × 8,236.96
  4. Step 4: Simplify right side
    12,630.40x = 155,813,959.62
  5. Step 5: Solve for x
    x = 155,813,959.62/12,630.40
  6. Step 6: Final answer
    x = 12,336.42

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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.