Home / 21,151.09-29,199.83-13,502.06

Finding the Fourth Proportional to 21,151.09, 29,199.83 and 13,502.06

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Solution

The fourth proportional to 21,151.09, 29,199.83 and 13,502.06 is: 18,640.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.09 : 29,199.83 = 13,502.06 : x
  2. Step 2: Convert to fraction form
    21,151.09/29,199.83 = 13,502.06/x
  3. Step 3: Cross multiply
    21,151.09x = 29,199.83 × 13,502.06
  4. Step 4: Simplify right side
    21,151.09x = 394,257,752.64
  5. Step 5: Solve for x
    x = 394,257,752.64/21,151.09
  6. Step 6: Final answer
    x = 18,640.07

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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.