Home / 12,612.12-18,921.20-3,846.48

Finding the Fourth Proportional to 12,612.12, 18,921.20 and 3,846.48

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Solution

The fourth proportional to 12,612.12, 18,921.20 and 3,846.48 is: 5,770.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.12 : 18,921.20 = 3,846.48 : x
  2. Step 2: Convert to fraction form
    12,612.12/18,921.20 = 3,846.48/x
  3. Step 3: Cross multiply
    12,612.12x = 18,921.20 × 3,846.48
  4. Step 4: Simplify right side
    12,612.12x = 72,780,017.38
  5. Step 5: Solve for x
    x = 72,780,017.38/12,612.12
  6. Step 6: Final answer
    x = 5,770.64

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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.