Home / 20,982.84-31,474.08-7,841.40

Finding the Fourth Proportional to 20,982.84, 31,474.08 and 7,841.40

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Solution

The fourth proportional to 20,982.84, 31,474.08 and 7,841.40 is: 11,762.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.84 : 31,474.08 = 7,841.40 : x
  2. Step 2: Convert to fraction form
    20,982.84/31,474.08 = 7,841.40/x
  3. Step 3: Cross multiply
    20,982.84x = 31,474.08 × 7,841.40
  4. Step 4: Simplify right side
    20,982.84x = 246,800,850.91
  5. Step 5: Solve for x
    x = 246,800,850.91/20,982.84
  6. Step 6: Final answer
    x = 11,762.03

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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.