Home / 18,918.88-26,112.56-10,965.48

Finding the Fourth Proportional to 18,918.88, 26,112.56 and 10,965.48

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Solution

The fourth proportional to 18,918.88, 26,112.56 and 10,965.48 is: 15,134.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.88 : 26,112.56 = 10,965.48 : x
  2. Step 2: Convert to fraction form
    18,918.88/26,112.56 = 10,965.48/x
  3. Step 3: Cross multiply
    18,918.88x = 26,112.56 × 10,965.48
  4. Step 4: Simplify right side
    18,918.88x = 286,336,754.43
  5. Step 5: Solve for x
    x = 286,336,754.43/18,918.88
  6. Step 6: Final answer
    x = 15,134.97

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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.