Home / 21,201.38-29,258.40-11,770.56

Finding the Fourth Proportional to 21,201.38, 29,258.40 and 11,770.56

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Solution

The fourth proportional to 21,201.38, 29,258.40 and 11,770.56 is: 16,243.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.38 : 29,258.40 = 11,770.56 : x
  2. Step 2: Convert to fraction form
    21,201.38/29,258.40 = 11,770.56/x
  3. Step 3: Cross multiply
    21,201.38x = 29,258.40 × 11,770.56
  4. Step 4: Simplify right side
    21,201.38x = 344,387,752.70
  5. Step 5: Solve for x
    x = 344,387,752.70/21,201.38
  6. Step 6: Final answer
    x = 16,243.65

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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.