Home / 12,385.60-18,578.44-3,151.60

Finding the Fourth Proportional to 12,385.60, 18,578.44 and 3,151.60

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Solution

The fourth proportional to 12,385.60, 18,578.44 and 3,151.60 is: 4,727.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.60 : 18,578.44 = 3,151.60 : x
  2. Step 2: Convert to fraction form
    12,385.60/18,578.44 = 3,151.60/x
  3. Step 3: Cross multiply
    12,385.60x = 18,578.44 × 3,151.60
  4. Step 4: Simplify right side
    12,385.60x = 58,551,811.50
  5. Step 5: Solve for x
    x = 58,551,811.50/12,385.60
  6. Step 6: Final answer
    x = 4,727.41

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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.