Home / 27,480.75-37,905.36-21,806.51

Finding the Fourth Proportional to 27,480.75, 37,905.36 and 21,806.51

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Solution

The fourth proportional to 27,480.75, 37,905.36 and 21,806.51 is: 30,078.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,480.75 : 37,905.36 = 21,806.51 : x
  2. Step 2: Convert to fraction form
    27,480.75/37,905.36 = 21,806.51/x
  3. Step 3: Cross multiply
    27,480.75x = 37,905.36 × 21,806.51
  4. Step 4: Simplify right side
    27,480.75x = 826,583,422.37
  5. Step 5: Solve for x
    x = 826,583,422.37/27,480.75
  6. Step 6: Final answer
    x = 30,078.63

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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.