Home / 18,921.44-26,115.96-10,968.08

Finding the Fourth Proportional to 18,921.44, 26,115.96 and 10,968.08

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Solution

The fourth proportional to 18,921.44, 26,115.96 and 10,968.08 is: 15,138.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.44 : 26,115.96 = 10,968.08 : x
  2. Step 2: Convert to fraction form
    18,921.44/26,115.96 = 10,968.08/x
  3. Step 3: Cross multiply
    18,921.44x = 26,115.96 × 10,968.08
  4. Step 4: Simplify right side
    18,921.44x = 286,441,938.56
  5. Step 5: Solve for x
    x = 286,441,938.56/18,921.44
  6. Step 6: Final answer
    x = 15,138.49

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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.