Home / 20,751.18-28,635.01-11,798.79

Finding the Fourth Proportional to 20,751.18, 28,635.01 and 11,798.79

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Solution

The fourth proportional to 20,751.18, 28,635.01 and 11,798.79 is: 16,281.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.18 : 28,635.01 = 11,798.79 : x
  2. Step 2: Convert to fraction form
    20,751.18/28,635.01 = 11,798.79/x
  3. Step 3: Cross multiply
    20,751.18x = 28,635.01 × 11,798.79
  4. Step 4: Simplify right side
    20,751.18x = 337,858,469.64
  5. Step 5: Solve for x
    x = 337,858,469.64/20,751.18
  6. Step 6: Final answer
    x = 16,281.41

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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.