Home / 20,324.48-30,477-8,631.32

Finding the Fourth Proportional to 20,324.48, 30,477 and 8,631.32

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Solution

The fourth proportional to 20,324.48, 30,477 and 8,631.32 is: 12,942.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324.48 : 30,477 = 8,631.32 : x
  2. Step 2: Convert to fraction form
    20,324.48/30,477 = 8,631.32/x
  3. Step 3: Cross multiply
    20,324.48x = 30,477 × 8,631.32
  4. Step 4: Simplify right side
    20,324.48x = 263,056,739.64
  5. Step 5: Solve for x
    x = 263,056,739.64/20,324.48
  6. Step 6: Final answer
    x = 12,942.85

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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.