Home / 18,406.08-27,431.52-18,376.80

Finding the Fourth Proportional to 18,406.08, 27,431.52 and 18,376.80

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Solution

The fourth proportional to 18,406.08, 27,431.52 and 18,376.80 is: 27,387.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.08 : 27,431.52 = 18,376.80 : x
  2. Step 2: Convert to fraction form
    18,406.08/27,431.52 = 18,376.80/x
  3. Step 3: Cross multiply
    18,406.08x = 27,431.52 × 18,376.80
  4. Step 4: Simplify right side
    18,406.08x = 504,103,556.74
  5. Step 5: Solve for x
    x = 504,103,556.74/18,406.08
  6. Step 6: Final answer
    x = 27,387.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.