Home / 12,087.81-18,133.45-3,768.57

Finding the Fourth Proportional to 12,087.81, 18,133.45 and 3,768.57

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Solution

The fourth proportional to 12,087.81, 18,133.45 and 3,768.57 is: 5,653.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.81 : 18,133.45 = 3,768.57 : x
  2. Step 2: Convert to fraction form
    12,087.81/18,133.45 = 3,768.57/x
  3. Step 3: Cross multiply
    12,087.81x = 18,133.45 × 3,768.57
  4. Step 4: Simplify right side
    12,087.81x = 68,337,166.25
  5. Step 5: Solve for x
    x = 68,337,166.25/12,087.81
  6. Step 6: Final answer
    x = 5,653.40

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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.