Home / 12,467.40-18,687.94-4,145.18

Finding the Fourth Proportional to 12,467.40, 18,687.94 and 4,145.18

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Solution

The fourth proportional to 12,467.40, 18,687.94 and 4,145.18 is: 6,213.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,467.40 : 18,687.94 = 4,145.18 : x
  2. Step 2: Convert to fraction form
    12,467.40/18,687.94 = 4,145.18/x
  3. Step 3: Cross multiply
    12,467.40x = 18,687.94 × 4,145.18
  4. Step 4: Simplify right side
    12,467.40x = 77,464,875.13
  5. Step 5: Solve for x
    x = 77,464,875.13/12,467.40
  6. Step 6: Final answer
    x = 6,213.39

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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.