Home / 18,201.31-25,122.56-11,133.65

Finding the Fourth Proportional to 18,201.31, 25,122.56 and 11,133.65

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Solution

The fourth proportional to 18,201.31, 25,122.56 and 11,133.65 is: 15,367.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,201.31 : 25,122.56 = 11,133.65 : x
  2. Step 2: Convert to fraction form
    18,201.31/25,122.56 = 11,133.65/x
  3. Step 3: Cross multiply
    18,201.31x = 25,122.56 × 11,133.65
  4. Step 4: Simplify right side
    18,201.31x = 279,705,797.28
  5. Step 5: Solve for x
    x = 279,705,797.28/18,201.31
  6. Step 6: Final answer
    x = 15,367.35

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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.