Home / 20,982.98-31,465.05-6,186.70

Finding the Fourth Proportional to 20,982.98, 31,465.05 and 6,186.70

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Solution

The fourth proportional to 20,982.98, 31,465.05 and 6,186.70 is: 9,277.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.98 : 31,465.05 = 6,186.70 : x
  2. Step 2: Convert to fraction form
    20,982.98/31,465.05 = 6,186.70/x
  3. Step 3: Cross multiply
    20,982.98x = 31,465.05 × 6,186.70
  4. Step 4: Simplify right side
    20,982.98x = 194,664,824.84
  5. Step 5: Solve for x
    x = 194,664,824.84/20,982.98
  6. Step 6: Final answer
    x = 9,277.27

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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.