Home / 20,624.21-28,456.68-11,669.76

Finding the Fourth Proportional to 20,624.21, 28,456.68 and 11,669.76

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Solution

The fourth proportional to 20,624.21, 28,456.68 and 11,669.76 is: 16,101.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,624.21 : 28,456.68 = 11,669.76 : x
  2. Step 2: Convert to fraction form
    20,624.21/28,456.68 = 11,669.76/x
  3. Step 3: Cross multiply
    20,624.21x = 28,456.68 × 11,669.76
  4. Step 4: Simplify right side
    20,624.21x = 332,082,626.00
  5. Step 5: Solve for x
    x = 332,082,626.00/20,624.21
  6. Step 6: Final answer
    x = 16,101.59

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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.