Home / 20,847.72-31,261.80-12,085.14

Finding the Fourth Proportional to 20,847.72, 31,261.80 and 12,085.14

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Solution

The fourth proportional to 20,847.72, 31,261.80 and 12,085.14 is: 18,122.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.72 : 31,261.80 = 12,085.14 : x
  2. Step 2: Convert to fraction form
    20,847.72/31,261.80 = 12,085.14/x
  3. Step 3: Cross multiply
    20,847.72x = 31,261.80 × 12,085.14
  4. Step 4: Simplify right side
    20,847.72x = 377,803,229.65
  5. Step 5: Solve for x
    x = 377,803,229.65/20,847.72
  6. Step 6: Final answer
    x = 18,122.04

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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.