Home / 21,188.73-29,241.84-12,236.61

Finding the Fourth Proportional to 21,188.73, 29,241.84 and 12,236.61

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Solution

The fourth proportional to 21,188.73, 29,241.84 and 12,236.61 is: 16,887.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.73 : 29,241.84 = 12,236.61 : x
  2. Step 2: Convert to fraction form
    21,188.73/29,241.84 = 12,236.61/x
  3. Step 3: Cross multiply
    21,188.73x = 29,241.84 × 12,236.61
  4. Step 4: Simplify right side
    21,188.73x = 357,820,991.76
  5. Step 5: Solve for x
    x = 357,820,991.76/21,188.73
  6. Step 6: Final answer
    x = 16,887.33

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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.