Home / 21,335.51-29,435.99-13,786.29

Finding the Fourth Proportional to 21,335.51, 29,435.99 and 13,786.29

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Solution

The fourth proportional to 21,335.51, 29,435.99 and 13,786.29 is: 19,020.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.51 : 29,435.99 = 13,786.29 : x
  2. Step 2: Convert to fraction form
    21,335.51/29,435.99 = 13,786.29/x
  3. Step 3: Cross multiply
    21,335.51x = 29,435.99 × 13,786.29
  4. Step 4: Simplify right side
    21,335.51x = 405,813,025.65
  5. Step 5: Solve for x
    x = 405,813,025.65/21,335.51
  6. Step 6: Final answer
    x = 19,020.54

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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.