Home / 11,878.89-16,394.70-6,774.41

Finding the Fourth Proportional to 11,878.89, 16,394.70 and 6,774.41

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Solution

The fourth proportional to 11,878.89, 16,394.70 and 6,774.41 is: 9,349.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.89 : 16,394.70 = 6,774.41 : x
  2. Step 2: Convert to fraction form
    11,878.89/16,394.70 = 6,774.41/x
  3. Step 3: Cross multiply
    11,878.89x = 16,394.70 × 6,774.41
  4. Step 4: Simplify right side
    11,878.89x = 111,064,516.22
  5. Step 5: Solve for x
    x = 111,064,516.22/11,878.89
  6. Step 6: Final answer
    x = 9,349.74

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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.