Home / 21,512.50-29,685.49-11,952.68

Finding the Fourth Proportional to 21,512.50, 29,685.49 and 11,952.68

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Solution

The fourth proportional to 21,512.50, 29,685.49 and 11,952.68 is: 16,493.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.50 : 29,685.49 = 11,952.68 : x
  2. Step 2: Convert to fraction form
    21,512.50/29,685.49 = 11,952.68/x
  3. Step 3: Cross multiply
    21,512.50x = 29,685.49 × 11,952.68
  4. Step 4: Simplify right side
    21,512.50x = 354,820,984.30
  5. Step 5: Solve for x
    x = 354,820,984.30/21,512.50
  6. Step 6: Final answer
    x = 16,493.71

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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.