Home / 21,213.18-29,273.58-11,781.14

Finding the Fourth Proportional to 21,213.18, 29,273.58 and 11,781.14

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Solution

The fourth proportional to 21,213.18, 29,273.58 and 11,781.14 is: 16,257.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.18 : 29,273.58 = 11,781.14 : x
  2. Step 2: Convert to fraction form
    21,213.18/29,273.58 = 11,781.14/x
  3. Step 3: Cross multiply
    21,213.18x = 29,273.58 × 11,781.14
  4. Step 4: Simplify right side
    21,213.18x = 344,875,997.91
  5. Step 5: Solve for x
    x = 344,875,997.91/21,213.18
  6. Step 6: Final answer
    x = 16,257.63

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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.