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Finding the Fourth Proportional to 18,871.37, 28,205.37 and 16,480.70

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Solution

The fourth proportional to 18,871.37, 28,205.37 and 16,480.70 is: 24,632.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.37 : 28,205.37 = 16,480.70 : x
  2. Step 2: Convert to fraction form
    18,871.37/28,205.37 = 16,480.70/x
  3. Step 3: Cross multiply
    18,871.37x = 28,205.37 × 16,480.70
  4. Step 4: Simplify right side
    18,871.37x = 464,844,241.36
  5. Step 5: Solve for x
    x = 464,844,241.36/18,871.37
  6. Step 6: Final answer
    x = 24,632.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.