Home / 12,087.57-18,129.80-3,323.17

Finding the Fourth Proportional to 12,087.57, 18,129.80 and 3,323.17

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Solution

The fourth proportional to 12,087.57, 18,129.80 and 3,323.17 is: 4,984.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.57 : 18,129.80 = 3,323.17 : x
  2. Step 2: Convert to fraction form
    12,087.57/18,129.80 = 3,323.17/x
  3. Step 3: Cross multiply
    12,087.57x = 18,129.80 × 3,323.17
  4. Step 4: Simplify right side
    12,087.57x = 60,248,370.45
  5. Step 5: Solve for x
    x = 60,248,370.45/12,087.57
  6. Step 6: Final answer
    x = 4,984.32

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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.