Home / 21,086.84-29,099.46-11,656.04

Finding the Fourth Proportional to 21,086.84, 29,099.46 and 11,656.04

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Solution

The fourth proportional to 21,086.84, 29,099.46 and 11,656.04 is: 16,085.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.84 : 29,099.46 = 11,656.04 : x
  2. Step 2: Convert to fraction form
    21,086.84/29,099.46 = 11,656.04/x
  3. Step 3: Cross multiply
    21,086.84x = 29,099.46 × 11,656.04
  4. Step 4: Simplify right side
    21,086.84x = 339,184,469.74
  5. Step 5: Solve for x
    x = 339,184,469.74/21,086.84
  6. Step 6: Final answer
    x = 16,085.13

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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.