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Finding the Fourth Proportional to 21,682.84, 29,922.26 and 11,746.84

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Solution

The fourth proportional to 21,682.84, 29,922.26 and 11,746.84 is: 16,210.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,682.84 : 29,922.26 = 11,746.84 : x
  2. Step 2: Convert to fraction form
    21,682.84/29,922.26 = 11,746.84/x
  3. Step 3: Cross multiply
    21,682.84x = 29,922.26 × 11,746.84
  4. Step 4: Simplify right side
    21,682.84x = 351,492,000.66
  5. Step 5: Solve for x
    x = 351,492,000.66/21,682.84
  6. Step 6: Final answer
    x = 16,210.61

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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.