Home / 21,076.10-29,085.72-11,516.92

Finding the Fourth Proportional to 21,076.10, 29,085.72 and 11,516.92

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Solution

The fourth proportional to 21,076.10, 29,085.72 and 11,516.92 is: 15,893.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.10 : 29,085.72 = 11,516.92 : x
  2. Step 2: Convert to fraction form
    21,076.10/29,085.72 = 11,516.92/x
  3. Step 3: Cross multiply
    21,076.10x = 29,085.72 × 11,516.92
  4. Step 4: Simplify right side
    21,076.10x = 334,977,910.38
  5. Step 5: Solve for x
    x = 334,977,910.38/21,076.10
  6. Step 6: Final answer
    x = 15,893.73

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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.