Home / 21,163.90-29,206.18-11,473.39

Finding the Fourth Proportional to 21,163.90, 29,206.18 and 11,473.39

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Solution

The fourth proportional to 21,163.90, 29,206.18 and 11,473.39 is: 15,833.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.90 : 29,206.18 = 11,473.39 : x
  2. Step 2: Convert to fraction form
    21,163.90/29,206.18 = 11,473.39/x
  3. Step 3: Cross multiply
    21,163.90x = 29,206.18 × 11,473.39
  4. Step 4: Simplify right side
    21,163.90x = 335,093,878.39
  5. Step 5: Solve for x
    x = 335,093,878.39/21,163.90
  6. Step 6: Final answer
    x = 15,833.28

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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.