Home / 9,511.78-13,129.30-6,679.84

Finding the Fourth Proportional to 9,511.78, 13,129.30 and 6,679.84

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Solution

The fourth proportional to 9,511.78, 13,129.30 and 6,679.84 is: 9,220.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,511.78 : 13,129.30 = 6,679.84 : x
  2. Step 2: Convert to fraction form
    9,511.78/13,129.30 = 6,679.84/x
  3. Step 3: Cross multiply
    9,511.78x = 13,129.30 × 6,679.84
  4. Step 4: Simplify right side
    9,511.78x = 87,701,524.27
  5. Step 5: Solve for x
    x = 87,701,524.27/9,511.78
  6. Step 6: Final answer
    x = 9,220.31

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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.