Home / 27,738.79-38,270.78-15,801.41

Finding the Fourth Proportional to 27,738.79, 38,270.78 and 15,801.41

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Solution

The fourth proportional to 27,738.79, 38,270.78 and 15,801.41 is: 21,800.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,738.79 : 38,270.78 = 15,801.41 : x
  2. Step 2: Convert to fraction form
    27,738.79/38,270.78 = 15,801.41/x
  3. Step 3: Cross multiply
    27,738.79x = 38,270.78 × 15,801.41
  4. Step 4: Simplify right side
    27,738.79x = 604,732,361.72
  5. Step 5: Solve for x
    x = 604,732,361.72/27,738.79
  6. Step 6: Final answer
    x = 21,800.97

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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.