Home / 12,335.45-18,504.35-3,450.78

Finding the Fourth Proportional to 12,335.45, 18,504.35 and 3,450.78

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Solution

The fourth proportional to 12,335.45, 18,504.35 and 3,450.78 is: 5,176.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,335.45 : 18,504.35 = 3,450.78 : x
  2. Step 2: Convert to fraction form
    12,335.45/18,504.35 = 3,450.78/x
  3. Step 3: Cross multiply
    12,335.45x = 18,504.35 × 3,450.78
  4. Step 4: Simplify right side
    12,335.45x = 63,854,440.89
  5. Step 5: Solve for x
    x = 63,854,440.89/12,335.45
  6. Step 6: Final answer
    x = 5,176.50

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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.