Home / 13,961.98-20,912.90-6,555.34

Finding the Fourth Proportional to 13,961.98, 20,912.90 and 6,555.34

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Solution

The fourth proportional to 13,961.98, 20,912.90 and 6,555.34 is: 9,818.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961.98 : 20,912.90 = 6,555.34 : x
  2. Step 2: Convert to fraction form
    13,961.98/20,912.90 = 6,555.34/x
  3. Step 3: Cross multiply
    13,961.98x = 20,912.90 × 6,555.34
  4. Step 4: Simplify right side
    13,961.98x = 137,091,169.89
  5. Step 5: Solve for x
    x = 137,091,169.89/13,961.98
  6. Step 6: Final answer
    x = 9,818.89

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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.