Home / 20,630.03-28,469.52-11,679.26

Finding the Fourth Proportional to 20,630.03, 28,469.52 and 11,679.26

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Solution

The fourth proportional to 20,630.03, 28,469.52 and 11,679.26 is: 16,117.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.03 : 28,469.52 = 11,679.26 : x
  2. Step 2: Convert to fraction form
    20,630.03/28,469.52 = 11,679.26/x
  3. Step 3: Cross multiply
    20,630.03x = 28,469.52 × 11,679.26
  4. Step 4: Simplify right side
    20,630.03x = 332,502,783.81
  5. Step 5: Solve for x
    x = 332,502,783.81/20,630.03
  6. Step 6: Final answer
    x = 16,117.42

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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.