Home / 21,121.29-29,146.94-11,560.96

Finding the Fourth Proportional to 21,121.29, 29,146.94 and 11,560.96

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Solution

The fourth proportional to 21,121.29, 29,146.94 and 11,560.96 is: 15,953.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121.29 : 29,146.94 = 11,560.96 : x
  2. Step 2: Convert to fraction form
    21,121.29/29,146.94 = 11,560.96/x
  3. Step 3: Cross multiply
    21,121.29x = 29,146.94 × 11,560.96
  4. Step 4: Simplify right side
    21,121.29x = 336,966,563.50
  5. Step 5: Solve for x
    x = 336,966,563.50/21,121.29
  6. Step 6: Final answer
    x = 15,953.88

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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.