Home / 11,912.63-16,440.84-6,878.07

Finding the Fourth Proportional to 11,912.63, 16,440.84 and 6,878.07

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Solution

The fourth proportional to 11,912.63, 16,440.84 and 6,878.07 is: 9,492.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.63 : 16,440.84 = 6,878.07 : x
  2. Step 2: Convert to fraction form
    11,912.63/16,440.84 = 6,878.07/x
  3. Step 3: Cross multiply
    11,912.63x = 16,440.84 × 6,878.07
  4. Step 4: Simplify right side
    11,912.63x = 113,081,248.38
  5. Step 5: Solve for x
    x = 113,081,248.38/11,912.63
  6. Step 6: Final answer
    x = 9,492.56

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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.