Home / 21,516.83-29,693.16-11,956.68

Finding the Fourth Proportional to 21,516.83, 29,693.16 and 11,956.68

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Solution

The fourth proportional to 21,516.83, 29,693.16 and 11,956.68 is: 16,500.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.83 : 29,693.16 = 11,956.68 : x
  2. Step 2: Convert to fraction form
    21,516.83/29,693.16 = 11,956.68/x
  3. Step 3: Cross multiply
    21,516.83x = 29,693.16 × 11,956.68
  4. Step 4: Simplify right side
    21,516.83x = 355,031,612.31
  5. Step 5: Solve for x
    x = 355,031,612.31/21,516.83
  6. Step 6: Final answer
    x = 16,500.18

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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.