Home / 18,674.64-28,020.70-9,315.38

Finding the Fourth Proportional to 18,674.64, 28,020.70 and 9,315.38

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Solution

The fourth proportional to 18,674.64, 28,020.70 and 9,315.38 is: 13,977.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.64 : 28,020.70 = 9,315.38 : x
  2. Step 2: Convert to fraction form
    18,674.64/28,020.70 = 9,315.38/x
  3. Step 3: Cross multiply
    18,674.64x = 28,020.70 × 9,315.38
  4. Step 4: Simplify right side
    18,674.64x = 261,023,328.56
  5. Step 5: Solve for x
    x = 261,023,328.56/18,674.64
  6. Step 6: Final answer
    x = 13,977.43

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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.