Home / 11,825.36-17,692.92-7,128.08

Finding the Fourth Proportional to 11,825.36, 17,692.92 and 7,128.08

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Solution

The fourth proportional to 11,825.36, 17,692.92 and 7,128.08 is: 10,664.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,825.36 : 17,692.92 = 7,128.08 : x
  2. Step 2: Convert to fraction form
    11,825.36/17,692.92 = 7,128.08/x
  3. Step 3: Cross multiply
    11,825.36x = 17,692.92 × 7,128.08
  4. Step 4: Simplify right side
    11,825.36x = 126,116,549.19
  5. Step 5: Solve for x
    x = 126,116,549.19/11,825.36
  6. Step 6: Final answer
    x = 10,664.92

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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.