Home / 20,730.32-31,099.92-7,582.64

Finding the Fourth Proportional to 20,730.32, 31,099.92 and 7,582.64

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Solution

The fourth proportional to 20,730.32, 31,099.92 and 7,582.64 is: 11,375.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.32 : 31,099.92 = 7,582.64 : x
  2. Step 2: Convert to fraction form
    20,730.32/31,099.92 = 7,582.64/x
  3. Step 3: Cross multiply
    20,730.32x = 31,099.92 × 7,582.64
  4. Step 4: Simplify right side
    20,730.32x = 235,819,497.39
  5. Step 5: Solve for x
    x = 235,819,497.39/20,730.32
  6. Step 6: Final answer
    x = 11,375.58

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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.