Home / 20,015.46-30,018.60-7,536.78

Finding the Fourth Proportional to 20,015.46, 30,018.60 and 7,536.78

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Solution

The fourth proportional to 20,015.46, 30,018.60 and 7,536.78 is: 11,303.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.46 : 30,018.60 = 7,536.78 : x
  2. Step 2: Convert to fraction form
    20,015.46/30,018.60 = 7,536.78/x
  3. Step 3: Cross multiply
    20,015.46x = 30,018.60 × 7,536.78
  4. Step 4: Simplify right side
    20,015.46x = 226,243,584.11
  5. Step 5: Solve for x
    x = 226,243,584.11/20,015.46
  6. Step 6: Final answer
    x = 11,303.44

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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.