Home / 12,645.53-18,977.80-4,755.83

Finding the Fourth Proportional to 12,645.53, 18,977.80 and 4,755.83

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Solution

The fourth proportional to 12,645.53, 18,977.80 and 4,755.83 is: 7,137.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.53 : 18,977.80 = 4,755.83 : x
  2. Step 2: Convert to fraction form
    12,645.53/18,977.80 = 4,755.83/x
  3. Step 3: Cross multiply
    12,645.53x = 18,977.80 × 4,755.83
  4. Step 4: Simplify right side
    12,645.53x = 90,255,190.57
  5. Step 5: Solve for x
    x = 90,255,190.57/12,645.53
  6. Step 6: Final answer
    x = 7,137.32

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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.