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Finding the Fourth Proportional to 28,773.70, 39,713.21 and 16,198.45

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Solution

The fourth proportional to 28,773.70, 39,713.21 and 16,198.45 is: 22,356.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,773.70 : 39,713.21 = 16,198.45 : x
  2. Step 2: Convert to fraction form
    28,773.70/39,713.21 = 16,198.45/x
  3. Step 3: Cross multiply
    28,773.70x = 39,713.21 × 16,198.45
  4. Step 4: Simplify right side
    28,773.70x = 643,292,247.96
  5. Step 5: Solve for x
    x = 643,292,247.96/28,773.70
  6. Step 6: Final answer
    x = 22,356.96

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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.