Home / 20,984.85-31,482.72-7,837.34

Finding the Fourth Proportional to 20,984.85, 31,482.72 and 7,837.34

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Solution

The fourth proportional to 20,984.85, 31,482.72 and 7,837.34 is: 11,758.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.85 : 31,482.72 = 7,837.34 : x
  2. Step 2: Convert to fraction form
    20,984.85/31,482.72 = 7,837.34/x
  3. Step 3: Cross multiply
    20,984.85x = 31,482.72 × 7,837.34
  4. Step 4: Simplify right side
    20,984.85x = 246,740,623.35
  5. Step 5: Solve for x
    x = 246,740,623.35/20,984.85
  6. Step 6: Final answer
    x = 11,758.04

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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.