Home / 12,085.40-16,676.70-6,779

Finding the Fourth Proportional to 12,085.40, 16,676.70 and 6,779

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Solution

The fourth proportional to 12,085.40, 16,676.70 and 6,779 is: 9,354.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.40 : 16,676.70 = 6,779 : x
  2. Step 2: Convert to fraction form
    12,085.40/16,676.70 = 6,779/x
  3. Step 3: Cross multiply
    12,085.40x = 16,676.70 × 6,779
  4. Step 4: Simplify right side
    12,085.40x = 113,051,349.30
  5. Step 5: Solve for x
    x = 113,051,349.30/12,085.40
  6. Step 6: Final answer
    x = 9,354.37

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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.