Home / 18,216.09-27,318.90-7,688.48

Finding the Fourth Proportional to 18,216.09, 27,318.90 and 7,688.48

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Solution

The fourth proportional to 18,216.09, 27,318.90 and 7,688.48 is: 11,530.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.09 : 27,318.90 = 7,688.48 : x
  2. Step 2: Convert to fraction form
    18,216.09/27,318.90 = 7,688.48/x
  3. Step 3: Cross multiply
    18,216.09x = 27,318.90 × 7,688.48
  4. Step 4: Simplify right side
    18,216.09x = 210,040,835.72
  5. Step 5: Solve for x
    x = 210,040,835.72/18,216.09
  6. Step 6: Final answer
    x = 11,530.51

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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.