Home / 20,788.72-31,166.64-10,922.65

Finding the Fourth Proportional to 20,788.72, 31,166.64 and 10,922.65

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Solution

The fourth proportional to 20,788.72, 31,166.64 and 10,922.65 is: 16,375.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.72 : 31,166.64 = 10,922.65 : x
  2. Step 2: Convert to fraction form
    20,788.72/31,166.64 = 10,922.65/x
  3. Step 3: Cross multiply
    20,788.72x = 31,166.64 × 10,922.65
  4. Step 4: Simplify right side
    20,788.72x = 340,422,222.48
  5. Step 5: Solve for x
    x = 340,422,222.48/20,788.72
  6. Step 6: Final answer
    x = 16,375.34

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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.