Home / 21,212.79-29,273.66-11,781.35

Finding the Fourth Proportional to 21,212.79, 29,273.66 and 11,781.35

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Solution

The fourth proportional to 21,212.79, 29,273.66 and 11,781.35 is: 16,258.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.79 : 29,273.66 = 11,781.35 : x
  2. Step 2: Convert to fraction form
    21,212.79/29,273.66 = 11,781.35/x
  3. Step 3: Cross multiply
    21,212.79x = 29,273.66 × 11,781.35
  4. Step 4: Simplify right side
    21,212.79x = 344,883,182.92
  5. Step 5: Solve for x
    x = 344,883,182.92/21,212.79
  6. Step 6: Final answer
    x = 16,258.27

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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.