Home / 20,247.65-27,930.05-12,175.68

Finding the Fourth Proportional to 20,247.65, 27,930.05 and 12,175.68

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Solution

The fourth proportional to 20,247.65, 27,930.05 and 12,175.68 is: 16,795.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,247.65 : 27,930.05 = 12,175.68 : x
  2. Step 2: Convert to fraction form
    20,247.65/27,930.05 = 12,175.68/x
  3. Step 3: Cross multiply
    20,247.65x = 27,930.05 × 12,175.68
  4. Step 4: Simplify right side
    20,247.65x = 340,067,290.31
  5. Step 5: Solve for x
    x = 340,067,290.31/20,247.65
  6. Step 6: Final answer
    x = 16,795.40

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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.