Home / 20,729.26-31,093.62-5,146.75

Finding the Fourth Proportional to 20,729.26, 31,093.62 and 5,146.75

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Solution

The fourth proportional to 20,729.26, 31,093.62 and 5,146.75 is: 7,720.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.26 : 31,093.62 = 5,146.75 : x
  2. Step 2: Convert to fraction form
    20,729.26/31,093.62 = 5,146.75/x
  3. Step 3: Cross multiply
    20,729.26x = 31,093.62 × 5,146.75
  4. Step 4: Simplify right side
    20,729.26x = 160,031,088.74
  5. Step 5: Solve for x
    x = 160,031,088.74/20,729.26
  6. Step 6: Final answer
    x = 7,720.06

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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.