Home / 21,162.43-29,203.50-11,965.20

Finding the Fourth Proportional to 21,162.43, 29,203.50 and 11,965.20

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Solution

The fourth proportional to 21,162.43, 29,203.50 and 11,965.20 is: 16,511.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.43 : 29,203.50 = 11,965.20 : x
  2. Step 2: Convert to fraction form
    21,162.43/29,203.50 = 11,965.20/x
  3. Step 3: Cross multiply
    21,162.43x = 29,203.50 × 11,965.20
  4. Step 4: Simplify right side
    21,162.43x = 349,425,718.20
  5. Step 5: Solve for x
    x = 349,425,718.20/21,162.43
  6. Step 6: Final answer
    x = 16,511.61

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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.