Home / 21,163.13-29,196.81-13,608.26

Finding the Fourth Proportional to 21,163.13, 29,196.81 and 13,608.26

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Solution

The fourth proportional to 21,163.13, 29,196.81 and 13,608.26 is: 18,774.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.13 : 29,196.81 = 13,608.26 : x
  2. Step 2: Convert to fraction form
    21,163.13/29,196.81 = 13,608.26/x
  3. Step 3: Cross multiply
    21,163.13x = 29,196.81 × 13,608.26
  4. Step 4: Simplify right side
    21,163.13x = 397,317,635.67
  5. Step 5: Solve for x
    x = 397,317,635.67/21,163.13
  6. Step 6: Final answer
    x = 18,774.05

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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.