Home / 19,982.68-27,578.64-12,029.20

Finding the Fourth Proportional to 19,982.68, 27,578.64 and 12,029.20

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Solution

The fourth proportional to 19,982.68, 27,578.64 and 12,029.20 is: 16,601.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.68 : 27,578.64 = 12,029.20 : x
  2. Step 2: Convert to fraction form
    19,982.68/27,578.64 = 12,029.20/x
  3. Step 3: Cross multiply
    19,982.68x = 27,578.64 × 12,029.20
  4. Step 4: Simplify right side
    19,982.68x = 331,748,976.29
  5. Step 5: Solve for x
    x = 331,748,976.29/19,982.68
  6. Step 6: Final answer
    x = 16,601.83

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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.