Home / 8,529.20-12,732.88-7,216.64

Finding the Fourth Proportional to 8,529.20, 12,732.88 and 7,216.64

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Solution

The fourth proportional to 8,529.20, 12,732.88 and 7,216.64 is: 10,773.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,529.20 : 12,732.88 = 7,216.64 : x
  2. Step 2: Convert to fraction form
    8,529.20/12,732.88 = 7,216.64/x
  3. Step 3: Cross multiply
    8,529.20x = 12,732.88 × 7,216.64
  4. Step 4: Simplify right side
    8,529.20x = 91,888,611.12
  5. Step 5: Solve for x
    x = 91,888,611.12/8,529.20
  6. Step 6: Final answer
    x = 10,773.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.