Home / 20,229.85-27,927.48-12,680.65

Finding the Fourth Proportional to 20,229.85, 27,927.48 and 12,680.65

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Solution

The fourth proportional to 20,229.85, 27,927.48 and 12,680.65 is: 17,505.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,229.85 : 27,927.48 = 12,680.65 : x
  2. Step 2: Convert to fraction form
    20,229.85/27,927.48 = 12,680.65/x
  3. Step 3: Cross multiply
    20,229.85x = 27,927.48 × 12,680.65
  4. Step 4: Simplify right side
    20,229.85x = 354,138,599.26
  5. Step 5: Solve for x
    x = 354,138,599.26/20,229.85
  6. Step 6: Final answer
    x = 17,505.75

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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.