Home / 12,385.08-18,578.94-3,620.04

Finding the Fourth Proportional to 12,385.08, 18,578.94 and 3,620.04

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Solution

The fourth proportional to 12,385.08, 18,578.94 and 3,620.04 is: 5,430.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.08 : 18,578.94 = 3,620.04 : x
  2. Step 2: Convert to fraction form
    12,385.08/18,578.94 = 3,620.04/x
  3. Step 3: Cross multiply
    12,385.08x = 18,578.94 × 3,620.04
  4. Step 4: Simplify right side
    12,385.08x = 67,256,505.96
  5. Step 5: Solve for x
    x = 67,256,505.96/12,385.08
  6. Step 6: Final answer
    x = 5,430.45

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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.