Home / 11,106.40-16,659.60-7,169.80

Finding the Fourth Proportional to 11,106.40, 16,659.60 and 7,169.80

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Solution

The fourth proportional to 11,106.40, 16,659.60 and 7,169.80 is: 10,754.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,106.40 : 16,659.60 = 7,169.80 : x
  2. Step 2: Convert to fraction form
    11,106.40/16,659.60 = 7,169.80/x
  3. Step 3: Cross multiply
    11,106.40x = 16,659.60 × 7,169.80
  4. Step 4: Simplify right side
    11,106.40x = 119,446,000.08
  5. Step 5: Solve for x
    x = 119,446,000.08/11,106.40
  6. Step 6: Final answer
    x = 10,754.70

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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.