Home / 11,078.75-16,579.10-6,920.72

Finding the Fourth Proportional to 11,078.75, 16,579.10 and 6,920.72

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Solution

The fourth proportional to 11,078.75, 16,579.10 and 6,920.72 is: 10,356.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.75 : 16,579.10 = 6,920.72 : x
  2. Step 2: Convert to fraction form
    11,078.75/16,579.10 = 6,920.72/x
  3. Step 3: Cross multiply
    11,078.75x = 16,579.10 × 6,920.72
  4. Step 4: Simplify right side
    11,078.75x = 114,739,315.80
  5. Step 5: Solve for x
    x = 114,739,315.80/11,078.75
  6. Step 6: Final answer
    x = 10,356.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.