Home / 11,412.80-17,121.64-3,622.16

Finding the Fourth Proportional to 11,412.80, 17,121.64 and 3,622.16

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Solution

The fourth proportional to 11,412.80, 17,121.64 and 3,622.16 is: 5,434.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,412.80 : 17,121.64 = 3,622.16 : x
  2. Step 2: Convert to fraction form
    11,412.80/17,121.64 = 3,622.16/x
  3. Step 3: Cross multiply
    11,412.80x = 17,121.64 × 3,622.16
  4. Step 4: Simplify right side
    11,412.80x = 62,017,319.54
  5. Step 5: Solve for x
    x = 62,017,319.54/11,412.80
  6. Step 6: Final answer
    x = 5,434.01

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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.