Home / 20,935.24-28,890.48-11,503.60

Finding the Fourth Proportional to 20,935.24, 28,890.48 and 11,503.60

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Solution

The fourth proportional to 20,935.24, 28,890.48 and 11,503.60 is: 15,874.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.24 : 28,890.48 = 11,503.60 : x
  2. Step 2: Convert to fraction form
    20,935.24/28,890.48 = 11,503.60/x
  3. Step 3: Cross multiply
    20,935.24x = 28,890.48 × 11,503.60
  4. Step 4: Simplify right side
    20,935.24x = 332,344,525.73
  5. Step 5: Solve for x
    x = 332,344,525.73/20,935.24
  6. Step 6: Final answer
    x = 15,874.88

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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.