Home / 20,238.48-27,927.78-11,285.45

Finding the Fourth Proportional to 20,238.48, 27,927.78 and 11,285.45

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Solution

The fourth proportional to 20,238.48, 27,927.78 and 11,285.45 is: 15,573.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.48 : 27,927.78 = 11,285.45 : x
  2. Step 2: Convert to fraction form
    20,238.48/27,927.78 = 11,285.45/x
  3. Step 3: Cross multiply
    20,238.48x = 27,927.78 × 11,285.45
  4. Step 4: Simplify right side
    20,238.48x = 315,177,564.80
  5. Step 5: Solve for x
    x = 315,177,564.80/20,238.48
  6. Step 6: Final answer
    x = 15,573.18

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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.