Home / 18,438.08-27,653.40-5,286.92

Finding the Fourth Proportional to 18,438.08, 27,653.40 and 5,286.92

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Solution

The fourth proportional to 18,438.08, 27,653.40 and 5,286.92 is: 7,929.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.08 : 27,653.40 = 5,286.92 : x
  2. Step 2: Convert to fraction form
    18,438.08/27,653.40 = 5,286.92/x
  3. Step 3: Cross multiply
    18,438.08x = 27,653.40 × 5,286.92
  4. Step 4: Simplify right side
    18,438.08x = 146,201,313.53
  5. Step 5: Solve for x
    x = 146,201,313.53/18,438.08
  6. Step 6: Final answer
    x = 7,929.31

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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.