Home / 12,645.27-18,977.39-4,755.55

Finding the Fourth Proportional to 12,645.27, 18,977.39 and 4,755.55

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Solution

The fourth proportional to 12,645.27, 18,977.39 and 4,755.55 is: 7,136.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.27 : 18,977.39 = 4,755.55 : x
  2. Step 2: Convert to fraction form
    12,645.27/18,977.39 = 4,755.55/x
  3. Step 3: Cross multiply
    12,645.27x = 18,977.39 × 4,755.55
  4. Step 4: Simplify right side
    12,645.27x = 90,247,927.01
  5. Step 5: Solve for x
    x = 90,247,927.01/12,645.27
  6. Step 6: Final answer
    x = 7,136.89

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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.