Home / 18,270.42-27,408.49-7,740.47

Finding the Fourth Proportional to 18,270.42, 27,408.49 and 7,740.47

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Solution

The fourth proportional to 18,270.42, 27,408.49 and 7,740.47 is: 11,611.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.42 : 27,408.49 = 7,740.47 : x
  2. Step 2: Convert to fraction form
    18,270.42/27,408.49 = 7,740.47/x
  3. Step 3: Cross multiply
    18,270.42x = 27,408.49 × 7,740.47
  4. Step 4: Simplify right side
    18,270.42x = 212,154,438.20
  5. Step 5: Solve for x
    x = 212,154,438.20/18,270.42
  6. Step 6: Final answer
    x = 11,611.91

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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.