Home / 11,817.40-16,308.06-6,512.21

Finding the Fourth Proportional to 11,817.40, 16,308.06 and 6,512.21

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Solution

The fourth proportional to 11,817.40, 16,308.06 and 6,512.21 is: 8,986.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.40 : 16,308.06 = 6,512.21 : x
  2. Step 2: Convert to fraction form
    11,817.40/16,308.06 = 6,512.21/x
  3. Step 3: Cross multiply
    11,817.40x = 16,308.06 × 6,512.21
  4. Step 4: Simplify right side
    11,817.40x = 106,201,511.41
  5. Step 5: Solve for x
    x = 106,201,511.41/11,817.40
  6. Step 6: Final answer
    x = 8,986.88

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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.