Home / 21,481.40-29,644.56-12,049.76

Finding the Fourth Proportional to 21,481.40, 29,644.56 and 12,049.76

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Solution

The fourth proportional to 21,481.40, 29,644.56 and 12,049.76 is: 16,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,481.40 : 29,644.56 = 12,049.76 : x
  2. Step 2: Convert to fraction form
    21,481.40/29,644.56 = 12,049.76/x
  3. Step 3: Cross multiply
    21,481.40x = 29,644.56 × 12,049.76
  4. Step 4: Simplify right side
    21,481.40x = 357,209,833.31
  5. Step 5: Solve for x
    x = 357,209,833.31/21,481.40
  6. Step 6: Final answer
    x = 16,628.80

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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.