Home / 12,650.49-18,975.51-3,885.21

Finding the Fourth Proportional to 12,650.49, 18,975.51 and 3,885.21

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Solution

The fourth proportional to 12,650.49, 18,975.51 and 3,885.21 is: 5,827.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,650.49 : 18,975.51 = 3,885.21 : x
  2. Step 2: Convert to fraction form
    12,650.49/18,975.51 = 3,885.21/x
  3. Step 3: Cross multiply
    12,650.49x = 18,975.51 × 3,885.21
  4. Step 4: Simplify right side
    12,650.49x = 73,723,841.21
  5. Step 5: Solve for x
    x = 73,723,841.21/12,650.49
  6. Step 6: Final answer
    x = 5,827.75

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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.