Home / 20,540.96-28,343.30-11,588.29

Finding the Fourth Proportional to 20,540.96, 28,343.30 and 11,588.29

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Solution

The fourth proportional to 20,540.96, 28,343.30 and 11,588.29 is: 15,990.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,540.96 : 28,343.30 = 11,588.29 : x
  2. Step 2: Convert to fraction form
    20,540.96/28,343.30 = 11,588.29/x
  3. Step 3: Cross multiply
    20,540.96x = 28,343.30 × 11,588.29
  4. Step 4: Simplify right side
    20,540.96x = 328,450,379.96
  5. Step 5: Solve for x
    x = 328,450,379.96/20,540.96
  6. Step 6: Final answer
    x = 15,990.02

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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.