Home / 21,200.82-29,258.46-11,769.54

Finding the Fourth Proportional to 21,200.82, 29,258.46 and 11,769.54

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Solution

The fourth proportional to 21,200.82, 29,258.46 and 11,769.54 is: 16,242.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.82 : 29,258.46 = 11,769.54 : x
  2. Step 2: Convert to fraction form
    21,200.82/29,258.46 = 11,769.54/x
  3. Step 3: Cross multiply
    21,200.82x = 29,258.46 × 11,769.54
  4. Step 4: Simplify right side
    21,200.82x = 344,358,615.31
  5. Step 5: Solve for x
    x = 344,358,615.31/21,200.82
  6. Step 6: Final answer
    x = 16,242.70

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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.