Home / 21,236.54-29,306.46-11,805.70

Finding the Fourth Proportional to 21,236.54, 29,306.46 and 11,805.70

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Solution

The fourth proportional to 21,236.54, 29,306.46 and 11,805.70 is: 16,291.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.54 : 29,306.46 = 11,805.70 : x
  2. Step 2: Convert to fraction form
    21,236.54/29,306.46 = 11,805.70/x
  3. Step 3: Cross multiply
    21,236.54x = 29,306.46 × 11,805.70
  4. Step 4: Simplify right side
    21,236.54x = 345,983,274.82
  5. Step 5: Solve for x
    x = 345,983,274.82/21,236.54
  6. Step 6: Final answer
    x = 16,291.89

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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.