Home / 21,516.34-29,691.14-11,955.52

Finding the Fourth Proportional to 21,516.34, 29,691.14 and 11,955.52

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Solution

The fourth proportional to 21,516.34, 29,691.14 and 11,955.52 is: 16,497.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.34 : 29,691.14 = 11,955.52 : x
  2. Step 2: Convert to fraction form
    21,516.34/29,691.14 = 11,955.52/x
  3. Step 3: Cross multiply
    21,516.34x = 29,691.14 × 11,955.52
  4. Step 4: Simplify right side
    21,516.34x = 354,973,018.09
  5. Step 5: Solve for x
    x = 354,973,018.09/21,516.34
  6. Step 6: Final answer
    x = 16,497.83

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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.