Home / 18,270.67-27,408.86-7,740.72

Finding the Fourth Proportional to 18,270.67, 27,408.86 and 7,740.72

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Solution

The fourth proportional to 18,270.67, 27,408.86 and 7,740.72 is: 11,612.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.67 : 27,408.86 = 7,740.72 : x
  2. Step 2: Convert to fraction form
    18,270.67/27,408.86 = 7,740.72/x
  3. Step 3: Cross multiply
    18,270.67x = 27,408.86 × 7,740.72
  4. Step 4: Simplify right side
    18,270.67x = 212,164,310.78
  5. Step 5: Solve for x
    x = 212,164,310.78/18,270.67
  6. Step 6: Final answer
    x = 11,612.29

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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.