Home / 20,121.24-27,757.98-12,562.68

Finding the Fourth Proportional to 20,121.24, 27,757.98 and 12,562.68

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Solution

The fourth proportional to 20,121.24, 27,757.98 and 12,562.68 is: 17,330.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.24 : 27,757.98 = 12,562.68 : x
  2. Step 2: Convert to fraction form
    20,121.24/27,757.98 = 12,562.68/x
  3. Step 3: Cross multiply
    20,121.24x = 27,757.98 × 12,562.68
  4. Step 4: Simplify right side
    20,121.24x = 348,714,620.19
  5. Step 5: Solve for x
    x = 348,714,620.19/20,121.24
  6. Step 6: Final answer
    x = 17,330.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.