Home / 21,516.57-29,695.41-12,085.11

Finding the Fourth Proportional to 21,516.57, 29,695.41 and 12,085.11

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Solution

The fourth proportional to 21,516.57, 29,695.41 and 12,085.11 is: 16,678.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.57 : 29,695.41 = 12,085.11 : x
  2. Step 2: Convert to fraction form
    21,516.57/29,695.41 = 12,085.11/x
  3. Step 3: Cross multiply
    21,516.57x = 29,695.41 × 12,085.11
  4. Step 4: Simplify right side
    21,516.57x = 358,872,296.35
  5. Step 5: Solve for x
    x = 358,872,296.35/21,516.57
  6. Step 6: Final answer
    x = 16,678.88

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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.