Home / 10,840.80-16,261.20-8,216.40

Finding the Fourth Proportional to 10,840.80, 16,261.20 and 8,216.40

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Solution

The fourth proportional to 10,840.80, 16,261.20 and 8,216.40 is: 12,324.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,840.80 : 16,261.20 = 8,216.40 : x
  2. Step 2: Convert to fraction form
    10,840.80/16,261.20 = 8,216.40/x
  3. Step 3: Cross multiply
    10,840.80x = 16,261.20 × 8,216.40
  4. Step 4: Simplify right side
    10,840.80x = 133,608,523.68
  5. Step 5: Solve for x
    x = 133,608,523.68/10,840.80
  6. Step 6: Final answer
    x = 12,324.60

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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.