Home / 20,780.75-31,184.81-7,633.23

Finding the Fourth Proportional to 20,780.75, 31,184.81 and 7,633.23

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Solution

The fourth proportional to 20,780.75, 31,184.81 and 7,633.23 is: 11,454.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780.75 : 31,184.81 = 7,633.23 : x
  2. Step 2: Convert to fraction form
    20,780.75/31,184.81 = 7,633.23/x
  3. Step 3: Cross multiply
    20,780.75x = 31,184.81 × 7,633.23
  4. Step 4: Simplify right side
    20,780.75x = 238,040,789.07
  5. Step 5: Solve for x
    x = 238,040,789.07/20,780.75
  6. Step 6: Final answer
    x = 11,454.87

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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.