Home / 11,211.05-15,359.22-10,790.66

Finding the Fourth Proportional to 11,211.05, 15,359.22 and 10,790.66

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Solution

The fourth proportional to 11,211.05, 15,359.22 and 10,790.66 is: 14,783.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.05 : 15,359.22 = 10,790.66 : x
  2. Step 2: Convert to fraction form
    11,211.05/15,359.22 = 10,790.66/x
  3. Step 3: Cross multiply
    11,211.05x = 15,359.22 × 10,790.66
  4. Step 4: Simplify right side
    11,211.05x = 165,736,128.93
  5. Step 5: Solve for x
    x = 165,736,128.93/11,211.05
  6. Step 6: Final answer
    x = 14,783.28

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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.