Home / 20,774.25-31,161.38-13,173.71

Finding the Fourth Proportional to 20,774.25, 31,161.38 and 13,173.71

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Solution

The fourth proportional to 20,774.25, 31,161.38 and 13,173.71 is: 19,760.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.25 : 31,161.38 = 13,173.71 : x
  2. Step 2: Convert to fraction form
    20,774.25/31,161.38 = 13,173.71/x
  3. Step 3: Cross multiply
    20,774.25x = 31,161.38 × 13,173.71
  4. Step 4: Simplify right side
    20,774.25x = 410,510,983.32
  5. Step 5: Solve for x
    x = 410,510,983.32/20,774.25
  6. Step 6: Final answer
    x = 19,760.57

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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.