Home / 8,516.50-11,739.96-6,720.89

Finding the Fourth Proportional to 8,516.50, 11,739.96 and 6,720.89

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Solution

The fourth proportional to 8,516.50, 11,739.96 and 6,720.89 is: 9,264.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,516.50 : 11,739.96 = 6,720.89 : x
  2. Step 2: Convert to fraction form
    8,516.50/11,739.96 = 6,720.89/x
  3. Step 3: Cross multiply
    8,516.50x = 11,739.96 × 6,720.89
  4. Step 4: Simplify right side
    8,516.50x = 78,902,921.06
  5. Step 5: Solve for x
    x = 78,902,921.06/8,516.50
  6. Step 6: Final answer
    x = 9,264.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.