Home / 12,078.77-18,113.73-4,179.25

Finding the Fourth Proportional to 12,078.77, 18,113.73 and 4,179.25

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Solution

The fourth proportional to 12,078.77, 18,113.73 and 4,179.25 is: 6,267.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.77 : 18,113.73 = 4,179.25 : x
  2. Step 2: Convert to fraction form
    12,078.77/18,113.73 = 4,179.25/x
  3. Step 3: Cross multiply
    12,078.77x = 18,113.73 × 4,179.25
  4. Step 4: Simplify right side
    12,078.77x = 75,701,711.18
  5. Step 5: Solve for x
    x = 75,701,711.18/12,078.77
  6. Step 6: Final answer
    x = 6,267.34

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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.