Home / 11,220.82-16,853.10-9,142.36

Finding the Fourth Proportional to 11,220.82, 16,853.10 and 9,142.36

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Solution

The fourth proportional to 11,220.82, 16,853.10 and 9,142.36 is: 13,731.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.82 : 16,853.10 = 9,142.36 : x
  2. Step 2: Convert to fraction form
    11,220.82/16,853.10 = 9,142.36/x
  3. Step 3: Cross multiply
    11,220.82x = 16,853.10 × 9,142.36
  4. Step 4: Simplify right side
    11,220.82x = 154,077,107.32
  5. Step 5: Solve for x
    x = 154,077,107.32/11,220.82
  6. Step 6: Final answer
    x = 13,731.36

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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.