Home / 11,212.10-16,854.60-7,947.80

Finding the Fourth Proportional to 11,212.10, 16,854.60 and 7,947.80

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Solution

The fourth proportional to 11,212.10, 16,854.60 and 7,947.80 is: 11,947.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.10 : 16,854.60 = 7,947.80 : x
  2. Step 2: Convert to fraction form
    11,212.10/16,854.60 = 7,947.80/x
  3. Step 3: Cross multiply
    11,212.10x = 16,854.60 × 7,947.80
  4. Step 4: Simplify right side
    11,212.10x = 133,956,989.88
  5. Step 5: Solve for x
    x = 133,956,989.88/11,212.10
  6. Step 6: Final answer
    x = 11,947.54

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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.