Home / 21,664.68-29,892.58-12,591.69

Finding the Fourth Proportional to 21,664.68, 29,892.58 and 12,591.69

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Solution

The fourth proportional to 21,664.68, 29,892.58 and 12,591.69 is: 17,373.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,664.68 : 29,892.58 = 12,591.69 : x
  2. Step 2: Convert to fraction form
    21,664.68/29,892.58 = 12,591.69/x
  3. Step 3: Cross multiply
    21,664.68x = 29,892.58 × 12,591.69
  4. Step 4: Simplify right side
    21,664.68x = 376,398,100.66
  5. Step 5: Solve for x
    x = 376,398,100.66/21,664.68
  6. Step 6: Final answer
    x = 17,373.81

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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.