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Finding the Fourth Proportional to 13,923.63, 20,857.63 and 8,373.94

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Solution

The fourth proportional to 13,923.63, 20,857.63 and 8,373.94 is: 12,544.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.63 : 20,857.63 = 8,373.94 : x
  2. Step 2: Convert to fraction form
    13,923.63/20,857.63 = 8,373.94/x
  3. Step 3: Cross multiply
    13,923.63x = 20,857.63 × 8,373.94
  4. Step 4: Simplify right side
    13,923.63x = 174,660,542.16
  5. Step 5: Solve for x
    x = 174,660,542.16/13,923.63
  6. Step 6: Final answer
    x = 12,544.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.