Home / 21,017.94-31,433.94-18,694.26

Finding the Fourth Proportional to 21,017.94, 31,433.94 and 18,694.26

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Solution

The fourth proportional to 21,017.94, 31,433.94 and 18,694.26 is: 27,958.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.94 : 31,433.94 = 18,694.26 : x
  2. Step 2: Convert to fraction form
    21,017.94/31,433.94 = 18,694.26/x
  3. Step 3: Cross multiply
    21,017.94x = 31,433.94 × 18,694.26
  4. Step 4: Simplify right side
    21,017.94x = 587,634,247.18
  5. Step 5: Solve for x
    x = 587,634,247.18/21,017.94
  6. Step 6: Final answer
    x = 27,958.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.