Home / 18,128.80-27,212.64-9,361.36

Finding the Fourth Proportional to 18,128.80, 27,212.64 and 9,361.36

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Solution

The fourth proportional to 18,128.80, 27,212.64 and 9,361.36 is: 14,052.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.80 : 27,212.64 = 9,361.36 : x
  2. Step 2: Convert to fraction form
    18,128.80/27,212.64 = 9,361.36/x
  3. Step 3: Cross multiply
    18,128.80x = 27,212.64 × 9,361.36
  4. Step 4: Simplify right side
    18,128.80x = 254,747,319.59
  5. Step 5: Solve for x
    x = 254,747,319.59/18,128.80
  6. Step 6: Final answer
    x = 14,052.08

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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.