Home / 20,741.72-31,085.70-10,855.96

Finding the Fourth Proportional to 20,741.72, 31,085.70 and 10,855.96

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Solution

The fourth proportional to 20,741.72, 31,085.70 and 10,855.96 is: 16,269.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.72 : 31,085.70 = 10,855.96 : x
  2. Step 2: Convert to fraction form
    20,741.72/31,085.70 = 10,855.96/x
  3. Step 3: Cross multiply
    20,741.72x = 31,085.70 × 10,855.96
  4. Step 4: Simplify right side
    20,741.72x = 337,465,115.77
  5. Step 5: Solve for x
    x = 337,465,115.77/20,741.72
  6. Step 6: Final answer
    x = 16,269.87

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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.