Home / 20,083.19-30,087.83-12,585.35

Finding the Fourth Proportional to 20,083.19, 30,087.83 and 12,585.35

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Solution

The fourth proportional to 20,083.19, 30,087.83 and 12,585.35 is: 18,854.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083.19 : 30,087.83 = 12,585.35 : x
  2. Step 2: Convert to fraction form
    20,083.19/30,087.83 = 12,585.35/x
  3. Step 3: Cross multiply
    20,083.19x = 30,087.83 × 12,585.35
  4. Step 4: Simplify right side
    20,083.19x = 378,665,871.29
  5. Step 5: Solve for x
    x = 378,665,871.29/20,083.19
  6. Step 6: Final answer
    x = 18,854.87

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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.