Home / 18,921.26-26,084.06-13,238.40

Finding the Fourth Proportional to 18,921.26, 26,084.06 and 13,238.40

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Solution

The fourth proportional to 18,921.26, 26,084.06 and 13,238.40 is: 18,249.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.26 : 26,084.06 = 13,238.40 : x
  2. Step 2: Convert to fraction form
    18,921.26/26,084.06 = 13,238.40/x
  3. Step 3: Cross multiply
    18,921.26x = 26,084.06 × 13,238.40
  4. Step 4: Simplify right side
    18,921.26x = 345,311,219.90
  5. Step 5: Solve for x
    x = 345,311,219.90/18,921.26
  6. Step 6: Final answer
    x = 18,249.91

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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.