Home / 12,120.36-18,180.95-3,354.54

Finding the Fourth Proportional to 12,120.36, 18,180.95 and 3,354.54

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Solution

The fourth proportional to 12,120.36, 18,180.95 and 3,354.54 is: 5,031.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.36 : 18,180.95 = 3,354.54 : x
  2. Step 2: Convert to fraction form
    12,120.36/18,180.95 = 3,354.54/x
  3. Step 3: Cross multiply
    12,120.36x = 18,180.95 × 3,354.54
  4. Step 4: Simplify right side
    12,120.36x = 60,988,707.24
  5. Step 5: Solve for x
    x = 60,988,707.24/12,120.36
  6. Step 6: Final answer
    x = 5,031.92

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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.