Home / 20,525.72-30,780.10-7,195.92

Finding the Fourth Proportional to 20,525.72, 30,780.10 and 7,195.92

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Solution

The fourth proportional to 20,525.72, 30,780.10 and 7,195.92 is: 10,790.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,525.72 : 30,780.10 = 7,195.92 : x
  2. Step 2: Convert to fraction form
    20,525.72/30,780.10 = 7,195.92/x
  3. Step 3: Cross multiply
    20,525.72x = 30,780.10 × 7,195.92
  4. Step 4: Simplify right side
    20,525.72x = 221,491,137.19
  5. Step 5: Solve for x
    x = 221,491,137.19/20,525.72
  6. Step 6: Final answer
    x = 10,790.91

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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.