Home / 21,129.38-29,160.57-11,697.94

Finding the Fourth Proportional to 21,129.38, 29,160.57 and 11,697.94

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Solution

The fourth proportional to 21,129.38, 29,160.57 and 11,697.94 is: 16,144.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,129.38 : 29,160.57 = 11,697.94 : x
  2. Step 2: Convert to fraction form
    21,129.38/29,160.57 = 11,697.94/x
  3. Step 3: Cross multiply
    21,129.38x = 29,160.57 × 11,697.94
  4. Step 4: Simplify right side
    21,129.38x = 341,118,598.23
  5. Step 5: Solve for x
    x = 341,118,598.23/21,129.38
  6. Step 6: Final answer
    x = 16,144.28

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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.