Home / 20,106.37-27,728.62-12,553.39

Finding the Fourth Proportional to 20,106.37, 27,728.62 and 12,553.39

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Solution

The fourth proportional to 20,106.37, 27,728.62 and 12,553.39 is: 17,312.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.37 : 27,728.62 = 12,553.39 : x
  2. Step 2: Convert to fraction form
    20,106.37/27,728.62 = 12,553.39/x
  3. Step 3: Cross multiply
    20,106.37x = 27,728.62 × 12,553.39
  4. Step 4: Simplify right side
    20,106.37x = 348,088,181.02
  5. Step 5: Solve for x
    x = 348,088,181.02/20,106.37
  6. Step 6: Final answer
    x = 17,312.33

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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.