Home / 20,237.90-27,928.80-11,285.33

Finding the Fourth Proportional to 20,237.90, 27,928.80 and 11,285.33

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Solution

The fourth proportional to 20,237.90, 27,928.80 and 11,285.33 is: 15,574.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,237.90 : 27,928.80 = 11,285.33 : x
  2. Step 2: Convert to fraction form
    20,237.90/27,928.80 = 11,285.33/x
  3. Step 3: Cross multiply
    20,237.90x = 27,928.80 × 11,285.33
  4. Step 4: Simplify right side
    20,237.90x = 315,185,584.86
  5. Step 5: Solve for x
    x = 315,185,584.86/20,237.90
  6. Step 6: Final answer
    x = 15,574.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.