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Finding the Fourth Proportional to 38,137.68, 52,629.84 and 21,370.68

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Solution

The fourth proportional to 38,137.68, 52,629.84 and 21,370.68 is: 29,491.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,137.68 : 52,629.84 = 21,370.68 : x
  2. Step 2: Convert to fraction form
    38,137.68/52,629.84 = 21,370.68/x
  3. Step 3: Cross multiply
    38,137.68x = 52,629.84 × 21,370.68
  4. Step 4: Simplify right side
    38,137.68x = 1,124,735,469.09
  5. Step 5: Solve for x
    x = 1,124,735,469.09/38,137.68
  6. Step 6: Final answer
    x = 29,491.45

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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.