Home / 18,960.11-28,418.75-11,548.31

Finding the Fourth Proportional to 18,960.11, 28,418.75 and 11,548.31

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Solution

The fourth proportional to 18,960.11, 28,418.75 and 11,548.31 is: 17,309.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.11 : 28,418.75 = 11,548.31 : x
  2. Step 2: Convert to fraction form
    18,960.11/28,418.75 = 11,548.31/x
  3. Step 3: Cross multiply
    18,960.11x = 28,418.75 × 11,548.31
  4. Step 4: Simplify right side
    18,960.11x = 328,188,378.28
  5. Step 5: Solve for x
    x = 328,188,378.28/18,960.11
  6. Step 6: Final answer
    x = 17,309.41

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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.