Home / 21,525.94-29,706.18-13,028.26

Finding the Fourth Proportional to 21,525.94, 29,706.18 and 13,028.26

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Solution

The fourth proportional to 21,525.94, 29,706.18 and 13,028.26 is: 17,979.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,525.94 : 29,706.18 = 13,028.26 : x
  2. Step 2: Convert to fraction form
    21,525.94/29,706.18 = 13,028.26/x
  3. Step 3: Cross multiply
    21,525.94x = 29,706.18 × 13,028.26
  4. Step 4: Simplify right side
    21,525.94x = 387,019,836.65
  5. Step 5: Solve for x
    x = 387,019,836.65/21,525.94
  6. Step 6: Final answer
    x = 17,979.23

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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.