Home / 18,960.19-28,381.96-12,372.19

Finding the Fourth Proportional to 18,960.19, 28,381.96 and 12,372.19

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Solution

The fourth proportional to 18,960.19, 28,381.96 and 12,372.19 is: 18,520.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.19 : 28,381.96 = 12,372.19 : x
  2. Step 2: Convert to fraction form
    18,960.19/28,381.96 = 12,372.19/x
  3. Step 3: Cross multiply
    18,960.19x = 28,381.96 × 12,372.19
  4. Step 4: Simplify right side
    18,960.19x = 351,147,001.69
  5. Step 5: Solve for x
    x = 351,147,001.69/18,960.19
  6. Step 6: Final answer
    x = 18,520.23

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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.