Home / 20,450.64-30,670.29-12,949.32

Finding the Fourth Proportional to 20,450.64, 30,670.29 and 12,949.32

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Solution

The fourth proportional to 20,450.64, 30,670.29 and 12,949.32 is: 19,420.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.64 : 30,670.29 = 12,949.32 : x
  2. Step 2: Convert to fraction form
    20,450.64/30,670.29 = 12,949.32/x
  3. Step 3: Cross multiply
    20,450.64x = 30,670.29 × 12,949.32
  4. Step 4: Simplify right side
    20,450.64x = 397,159,399.70
  5. Step 5: Solve for x
    x = 397,159,399.70/20,450.64
  6. Step 6: Final answer
    x = 19,420.39

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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.