Home / 11,211.19-15,359.41-10,790.80

Finding the Fourth Proportional to 11,211.19, 15,359.41 and 10,790.80

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Solution

The fourth proportional to 11,211.19, 15,359.41 and 10,790.80 is: 14,783.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.19 : 15,359.41 = 10,790.80 : x
  2. Step 2: Convert to fraction form
    11,211.19/15,359.41 = 10,790.80/x
  3. Step 3: Cross multiply
    11,211.19x = 15,359.41 × 10,790.80
  4. Step 4: Simplify right side
    11,211.19x = 165,740,367.74
  5. Step 5: Solve for x
    x = 165,740,367.74/11,211.19
  6. Step 6: Final answer
    x = 14,783.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.