Home / 12,455.28-18,689.46-4,137.39

Finding the Fourth Proportional to 12,455.28, 18,689.46 and 4,137.39

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Solution

The fourth proportional to 12,455.28, 18,689.46 and 4,137.39 is: 6,208.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.28 : 18,689.46 = 4,137.39 : x
  2. Step 2: Convert to fraction form
    12,455.28/18,689.46 = 4,137.39/x
  3. Step 3: Cross multiply
    12,455.28x = 18,689.46 × 4,137.39
  4. Step 4: Simplify right side
    12,455.28x = 77,325,584.91
  5. Step 5: Solve for x
    x = 77,325,584.91/12,455.28
  6. Step 6: Final answer
    x = 6,208.26

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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.