Home / 12,087.83-18,129.64-3,320.66

Finding the Fourth Proportional to 12,087.83, 18,129.64 and 3,320.66

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Solution

The fourth proportional to 12,087.83, 18,129.64 and 3,320.66 is: 4,980.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.83 : 18,129.64 = 3,320.66 : x
  2. Step 2: Convert to fraction form
    12,087.83/18,129.64 = 3,320.66/x
  3. Step 3: Cross multiply
    12,087.83x = 18,129.64 × 3,320.66
  4. Step 4: Simplify right side
    12,087.83x = 60,202,370.36
  5. Step 5: Solve for x
    x = 60,202,370.36/12,087.83
  6. Step 6: Final answer
    x = 4,980.41

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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.