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Finding the Fourth Proportional to 28,198.99, 38,918.73 and 16,259.98

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Solution

The fourth proportional to 28,198.99, 38,918.73 and 16,259.98 is: 22,441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.99 : 38,918.73 = 16,259.98 : x
  2. Step 2: Convert to fraction form
    28,198.99/38,918.73 = 16,259.98/x
  3. Step 3: Cross multiply
    28,198.99x = 38,918.73 × 16,259.98
  4. Step 4: Simplify right side
    28,198.99x = 632,817,771.43
  5. Step 5: Solve for x
    x = 632,817,771.43/28,198.99
  6. Step 6: Final answer
    x = 22,441.15

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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.