Home / 19,983.39-29,993.58-10,129.61

Finding the Fourth Proportional to 19,983.39, 29,993.58 and 10,129.61

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Solution

The fourth proportional to 19,983.39, 29,993.58 and 10,129.61 is: 15,203.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,983.39 : 29,993.58 = 10,129.61 : x
  2. Step 2: Convert to fraction form
    19,983.39/29,993.58 = 10,129.61/x
  3. Step 3: Cross multiply
    19,983.39x = 29,993.58 × 10,129.61
  4. Step 4: Simplify right side
    19,983.39x = 303,823,117.94
  5. Step 5: Solve for x
    x = 303,823,117.94/19,983.39
  6. Step 6: Final answer
    x = 15,203.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.