Home / 21,092.72-31,628.76-11,236.88

Finding the Fourth Proportional to 21,092.72, 31,628.76 and 11,236.88

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Solution

The fourth proportional to 21,092.72, 31,628.76 and 11,236.88 is: 16,849.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,092.72 : 31,628.76 = 11,236.88 : x
  2. Step 2: Convert to fraction form
    21,092.72/31,628.76 = 11,236.88/x
  3. Step 3: Cross multiply
    21,092.72x = 31,628.76 × 11,236.88
  4. Step 4: Simplify right side
    21,092.72x = 355,408,580.67
  5. Step 5: Solve for x
    x = 355,408,580.67/21,092.72
  6. Step 6: Final answer
    x = 16,849.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.