Home / 18,907.40-26,091.78-11,837.72

Finding the Fourth Proportional to 18,907.40, 26,091.78 and 11,837.72

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Solution

The fourth proportional to 18,907.40, 26,091.78 and 11,837.72 is: 16,335.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.40 : 26,091.78 = 11,837.72 : x
  2. Step 2: Convert to fraction form
    18,907.40/26,091.78 = 11,837.72/x
  3. Step 3: Cross multiply
    18,907.40x = 26,091.78 × 11,837.72
  4. Step 4: Simplify right side
    18,907.40x = 308,867,185.94
  5. Step 5: Solve for x
    x = 308,867,185.94/18,907.40
  6. Step 6: Final answer
    x = 16,335.78

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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.