Home / 12,186.83-18,280.90-3,867.48

Finding the Fourth Proportional to 12,186.83, 18,280.90 and 3,867.48

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Solution

The fourth proportional to 12,186.83, 18,280.90 and 3,867.48 is: 5,801.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.83 : 18,280.90 = 3,867.48 : x
  2. Step 2: Convert to fraction form
    12,186.83/18,280.90 = 3,867.48/x
  3. Step 3: Cross multiply
    12,186.83x = 18,280.90 × 3,867.48
  4. Step 4: Simplify right side
    12,186.83x = 70,701,015.13
  5. Step 5: Solve for x
    x = 70,701,015.13/12,186.83
  6. Step 6: Final answer
    x = 5,801.43

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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.