Home / 18,638.37-27,931.32-9,269.55

Finding the Fourth Proportional to 18,638.37, 27,931.32 and 9,269.55

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Solution

The fourth proportional to 18,638.37, 27,931.32 and 9,269.55 is: 13,891.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.37 : 27,931.32 = 9,269.55 : x
  2. Step 2: Convert to fraction form
    18,638.37/27,931.32 = 9,269.55/x
  3. Step 3: Cross multiply
    18,638.37x = 27,931.32 × 9,269.55
  4. Step 4: Simplify right side
    18,638.37x = 258,910,767.31
  5. Step 5: Solve for x
    x = 258,910,767.31/18,638.37
  6. Step 6: Final answer
    x = 13,891.28

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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.