Home / 21,727.68-29,984.16-12,296.80

Finding the Fourth Proportional to 21,727.68, 29,984.16 and 12,296.80

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Solution

The fourth proportional to 21,727.68, 29,984.16 and 12,296.80 is: 16,969.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,727.68 : 29,984.16 = 12,296.80 : x
  2. Step 2: Convert to fraction form
    21,727.68/29,984.16 = 12,296.80/x
  3. Step 3: Cross multiply
    21,727.68x = 29,984.16 × 12,296.80
  4. Step 4: Simplify right side
    21,727.68x = 368,709,218.69
  5. Step 5: Solve for x
    x = 368,709,218.69/21,727.68
  6. Step 6: Final answer
    x = 16,969.56

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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.