Home / 20,093.78-27,729.28-11,141.29

Finding the Fourth Proportional to 20,093.78, 27,729.28 and 11,141.29

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Solution

The fourth proportional to 20,093.78, 27,729.28 and 11,141.29 is: 15,374.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,093.78 : 27,729.28 = 11,141.29 : x
  2. Step 2: Convert to fraction form
    20,093.78/27,729.28 = 11,141.29/x
  3. Step 3: Cross multiply
    20,093.78x = 27,729.28 × 11,141.29
  4. Step 4: Simplify right side
    20,093.78x = 308,939,811.32
  5. Step 5: Solve for x
    x = 308,939,811.32/20,093.78
  6. Step 6: Final answer
    x = 15,374.90

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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.