Home / 12,628.20-18,893.70-8,254.20

Finding the Fourth Proportional to 12,628.20, 18,893.70 and 8,254.20

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Solution

The fourth proportional to 12,628.20, 18,893.70 and 8,254.20 is: 12,349.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.20 : 18,893.70 = 8,254.20 : x
  2. Step 2: Convert to fraction form
    12,628.20/18,893.70 = 8,254.20/x
  3. Step 3: Cross multiply
    12,628.20x = 18,893.70 × 8,254.20
  4. Step 4: Simplify right side
    12,628.20x = 155,952,378.54
  5. Step 5: Solve for x
    x = 155,952,378.54/12,628.20
  6. Step 6: Final answer
    x = 12,349.53

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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.