Home / 20,191.23-27,860.43-18,558.09

Finding the Fourth Proportional to 20,191.23, 27,860.43 and 18,558.09

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Solution

The fourth proportional to 20,191.23, 27,860.43 and 18,558.09 is: 25,606.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.23 : 27,860.43 = 18,558.09 : x
  2. Step 2: Convert to fraction form
    20,191.23/27,860.43 = 18,558.09/x
  3. Step 3: Cross multiply
    20,191.23x = 27,860.43 × 18,558.09
  4. Step 4: Simplify right side
    20,191.23x = 517,036,367.38
  5. Step 5: Solve for x
    x = 517,036,367.38/20,191.23
  6. Step 6: Final answer
    x = 25,606.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.