Home / 20,743.56-31,115.45-5,161.19

Finding the Fourth Proportional to 20,743.56, 31,115.45 and 5,161.19

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Solution

The fourth proportional to 20,743.56, 31,115.45 and 5,161.19 is: 7,741.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.56 : 31,115.45 = 5,161.19 : x
  2. Step 2: Convert to fraction form
    20,743.56/31,115.45 = 5,161.19/x
  3. Step 3: Cross multiply
    20,743.56x = 31,115.45 × 5,161.19
  4. Step 4: Simplify right side
    20,743.56x = 160,592,568.00
  5. Step 5: Solve for x
    x = 160,592,568.00/20,743.56
  6. Step 6: Final answer
    x = 7,741.80

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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.