Home / 12,135.96-18,192.78-6,280.56

Finding the Fourth Proportional to 12,135.96, 18,192.78 and 6,280.56

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Solution

The fourth proportional to 12,135.96, 18,192.78 and 6,280.56 is: 9,415.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.96 : 18,192.78 = 6,280.56 : x
  2. Step 2: Convert to fraction form
    12,135.96/18,192.78 = 6,280.56/x
  3. Step 3: Cross multiply
    12,135.96x = 18,192.78 × 6,280.56
  4. Step 4: Simplify right side
    12,135.96x = 114,260,846.36
  5. Step 5: Solve for x
    x = 114,260,846.36/12,135.96
  6. Step 6: Final answer
    x = 9,415.06

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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.