Home / 21,673.37-29,908.27-13,611.21

Finding the Fourth Proportional to 21,673.37, 29,908.27 and 13,611.21

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Solution

The fourth proportional to 21,673.37, 29,908.27 and 13,611.21 is: 18,782.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,673.37 : 29,908.27 = 13,611.21 : x
  2. Step 2: Convert to fraction form
    21,673.37/29,908.27 = 13,611.21/x
  3. Step 3: Cross multiply
    21,673.37x = 29,908.27 × 13,611.21
  4. Step 4: Simplify right side
    21,673.37x = 407,087,648.56
  5. Step 5: Solve for x
    x = 407,087,648.56/21,673.37
  6. Step 6: Final answer
    x = 18,782.85

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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.