Home / 18,960.38-28,418.42-14,265.30

Finding the Fourth Proportional to 18,960.38, 28,418.42 and 14,265.30

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Solution

The fourth proportional to 18,960.38, 28,418.42 and 14,265.30 is: 21,381.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.38 : 28,418.42 = 14,265.30 : x
  2. Step 2: Convert to fraction form
    18,960.38/28,418.42 = 14,265.30/x
  3. Step 3: Cross multiply
    18,960.38x = 28,418.42 × 14,265.30
  4. Step 4: Simplify right side
    18,960.38x = 405,397,197.81
  5. Step 5: Solve for x
    x = 405,397,197.81/18,960.38
  6. Step 6: Final answer
    x = 21,381.28

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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.