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Finding the Fourth Proportional to 21,046.68, 29,043.98 and 11,486.12

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Solution

The fourth proportional to 21,046.68, 29,043.98 and 11,486.12 is: 15,850.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.68 : 29,043.98 = 11,486.12 : x
  2. Step 2: Convert to fraction form
    21,046.68/29,043.98 = 11,486.12/x
  3. Step 3: Cross multiply
    21,046.68x = 29,043.98 × 11,486.12
  4. Step 4: Simplify right side
    21,046.68x = 333,602,639.56
  5. Step 5: Solve for x
    x = 333,602,639.56/21,046.68
  6. Step 6: Final answer
    x = 15,850.61

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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.