Home / 18,135.23-27,207.43-8,779.73

Finding the Fourth Proportional to 18,135.23, 27,207.43 and 8,779.73

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Solution

The fourth proportional to 18,135.23, 27,207.43 and 8,779.73 is: 13,171.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.23 : 27,207.43 = 8,779.73 : x
  2. Step 2: Convert to fraction form
    18,135.23/27,207.43 = 8,779.73/x
  3. Step 3: Cross multiply
    18,135.23x = 27,207.43 × 8,779.73
  4. Step 4: Simplify right side
    18,135.23x = 238,873,731.41
  5. Step 5: Solve for x
    x = 238,873,731.41/18,135.23
  6. Step 6: Final answer
    x = 13,171.81

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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.