Home / 37,638.21-51,937.91-20,639.73

Finding the Fourth Proportional to 37,638.21, 51,937.91 and 20,639.73

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Solution

The fourth proportional to 37,638.21, 51,937.91 and 20,639.73 is: 28,481.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,638.21 : 51,937.91 = 20,639.73 : x
  2. Step 2: Convert to fraction form
    37,638.21/51,937.91 = 20,639.73/x
  3. Step 3: Cross multiply
    37,638.21x = 51,937.91 × 20,639.73
  4. Step 4: Simplify right side
    37,638.21x = 1,071,984,335.97
  5. Step 5: Solve for x
    x = 1,071,984,335.97/37,638.21
  6. Step 6: Final answer
    x = 28,481.28

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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.