Home / 20,991.58-31,493.13-6,200.50

Finding the Fourth Proportional to 20,991.58, 31,493.13 and 6,200.50

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Solution

The fourth proportional to 20,991.58, 31,493.13 and 6,200.50 is: 9,302.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,991.58 : 31,493.13 = 6,200.50 : x
  2. Step 2: Convert to fraction form
    20,991.58/31,493.13 = 6,200.50/x
  3. Step 3: Cross multiply
    20,991.58x = 31,493.13 × 6,200.50
  4. Step 4: Simplify right side
    20,991.58x = 195,273,152.57
  5. Step 5: Solve for x
    x = 195,273,152.57/20,991.58
  6. Step 6: Final answer
    x = 9,302.45

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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.