Home / 8,728.70-13,099.39-6,543.32

Finding the Fourth Proportional to 8,728.70, 13,099.39 and 6,543.32

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Solution

The fourth proportional to 8,728.70, 13,099.39 and 6,543.32 is: 9,819.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.70 : 13,099.39 = 6,543.32 : x
  2. Step 2: Convert to fraction form
    8,728.70/13,099.39 = 6,543.32/x
  3. Step 3: Cross multiply
    8,728.70x = 13,099.39 × 6,543.32
  4. Step 4: Simplify right side
    8,728.70x = 85,713,418.72
  5. Step 5: Solve for x
    x = 85,713,418.72/8,728.70
  6. Step 6: Final answer
    x = 9,819.73

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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.