Home / 11,178.28-16,768.86-3,385.72

Finding the Fourth Proportional to 11,178.28, 16,768.86 and 3,385.72

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Solution

The fourth proportional to 11,178.28, 16,768.86 and 3,385.72 is: 5,079.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,178.28 : 16,768.86 = 3,385.72 : x
  2. Step 2: Convert to fraction form
    11,178.28/16,768.86 = 3,385.72/x
  3. Step 3: Cross multiply
    11,178.28x = 16,768.86 × 3,385.72
  4. Step 4: Simplify right side
    11,178.28x = 56,774,664.68
  5. Step 5: Solve for x
    x = 56,774,664.68/11,178.28
  6. Step 6: Final answer
    x = 5,079.02

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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.