Home / 20,630.84-28,469.07-11,679.35

Finding the Fourth Proportional to 20,630.84, 28,469.07 and 11,679.35

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Solution

The fourth proportional to 20,630.84, 28,469.07 and 11,679.35 is: 16,116.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.84 : 28,469.07 = 11,679.35 : x
  2. Step 2: Convert to fraction form
    20,630.84/28,469.07 = 11,679.35/x
  3. Step 3: Cross multiply
    20,630.84x = 28,469.07 × 11,679.35
  4. Step 4: Simplify right side
    20,630.84x = 332,500,090.36
  5. Step 5: Solve for x
    x = 332,500,090.36/20,630.84
  6. Step 6: Final answer
    x = 16,116.66

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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.