Home / 20,244.92-30,304.10-12,857.72

Finding the Fourth Proportional to 20,244.92, 30,304.10 and 12,857.72

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Solution

The fourth proportional to 20,244.92, 30,304.10 and 12,857.72 is: 19,246.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,244.92 : 30,304.10 = 12,857.72 : x
  2. Step 2: Convert to fraction form
    20,244.92/30,304.10 = 12,857.72/x
  3. Step 3: Cross multiply
    20,244.92x = 30,304.10 × 12,857.72
  4. Step 4: Simplify right side
    20,244.92x = 389,641,632.65
  5. Step 5: Solve for x
    x = 389,641,632.65/20,244.92
  6. Step 6: Final answer
    x = 19,246.39

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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.