Home / 18,438.21-27,657.23-5,290.56

Finding the Fourth Proportional to 18,438.21, 27,657.23 and 5,290.56

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Solution

The fourth proportional to 18,438.21, 27,657.23 and 5,290.56 is: 7,935.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.21 : 27,657.23 = 5,290.56 : x
  2. Step 2: Convert to fraction form
    18,438.21/27,657.23 = 5,290.56/x
  3. Step 3: Cross multiply
    18,438.21x = 27,657.23 × 5,290.56
  4. Step 4: Simplify right side
    18,438.21x = 146,322,208.30
  5. Step 5: Solve for x
    x = 146,322,208.30/18,438.21
  6. Step 6: Final answer
    x = 7,935.81

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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.