Home / 20,106.42-27,728.70-12,553.44

Finding the Fourth Proportional to 20,106.42, 27,728.70 and 12,553.44

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Solution

The fourth proportional to 20,106.42, 27,728.70 and 12,553.44 is: 17,312.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.42 : 27,728.70 = 12,553.44 : x
  2. Step 2: Convert to fraction form
    20,106.42/27,728.70 = 12,553.44/x
  3. Step 3: Cross multiply
    20,106.42x = 27,728.70 × 12,553.44
  4. Step 4: Simplify right side
    20,106.42x = 348,090,571.73
  5. Step 5: Solve for x
    x = 348,090,571.73/20,106.42
  6. Step 6: Final answer
    x = 17,312.41

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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.