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Finding the Fourth Proportional to 34,653.80, 47,822.21 and 18,738.21

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Solution

The fourth proportional to 34,653.80, 47,822.21 and 18,738.21 is: 25,858.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,653.80 : 47,822.21 = 18,738.21 : x
  2. Step 2: Convert to fraction form
    34,653.80/47,822.21 = 18,738.21/x
  3. Step 3: Cross multiply
    34,653.80x = 47,822.21 × 18,738.21
  4. Step 4: Simplify right side
    34,653.80x = 896,102,661.41
  5. Step 5: Solve for x
    x = 896,102,661.41/34,653.80
  6. Step 6: Final answer
    x = 25,858.71

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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.