Home / 12,458.22-18,685.35-3,450.21

Finding the Fourth Proportional to 12,458.22, 18,685.35 and 3,450.21

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Solution

The fourth proportional to 12,458.22, 18,685.35 and 3,450.21 is: 5,174.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.22 : 18,685.35 = 3,450.21 : x
  2. Step 2: Convert to fraction form
    12,458.22/18,685.35 = 3,450.21/x
  3. Step 3: Cross multiply
    12,458.22x = 18,685.35 × 3,450.21
  4. Step 4: Simplify right side
    12,458.22x = 64,468,381.42
  5. Step 5: Solve for x
    x = 64,468,381.42/12,458.22
  6. Step 6: Final answer
    x = 5,174.77

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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.