Home / 12,089.10-16,682.70-6,783.78

Finding the Fourth Proportional to 12,089.10, 16,682.70 and 6,783.78

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Solution

The fourth proportional to 12,089.10, 16,682.70 and 6,783.78 is: 9,361.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,089.10 : 16,682.70 = 6,783.78 : x
  2. Step 2: Convert to fraction form
    12,089.10/16,682.70 = 6,783.78/x
  3. Step 3: Cross multiply
    12,089.10x = 16,682.70 × 6,783.78
  4. Step 4: Simplify right side
    12,089.10x = 113,171,766.61
  5. Step 5: Solve for x
    x = 113,171,766.61/12,089.10
  6. Step 6: Final answer
    x = 9,361.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.