Home / 21,222.24-29,285.76-11,790.88

Finding the Fourth Proportional to 21,222.24, 29,285.76 and 11,790.88

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Solution

The fourth proportional to 21,222.24, 29,285.76 and 11,790.88 is: 16,270.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.24 : 29,285.76 = 11,790.88 : x
  2. Step 2: Convert to fraction form
    21,222.24/29,285.76 = 11,790.88/x
  3. Step 3: Cross multiply
    21,222.24x = 29,285.76 × 11,790.88
  4. Step 4: Simplify right side
    21,222.24x = 345,304,881.87
  5. Step 5: Solve for x
    x = 345,304,881.87/21,222.24
  6. Step 6: Final answer
    x = 16,270.90

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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.