Home / 12,253.95-18,375.39-3,486.78

Finding the Fourth Proportional to 12,253.95, 18,375.39 and 3,486.78

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Solution

The fourth proportional to 12,253.95, 18,375.39 and 3,486.78 is: 5,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,253.95 : 18,375.39 = 3,486.78 : x
  2. Step 2: Convert to fraction form
    12,253.95/18,375.39 = 3,486.78/x
  3. Step 3: Cross multiply
    12,253.95x = 18,375.39 × 3,486.78
  4. Step 4: Simplify right side
    12,253.95x = 64,070,942.34
  5. Step 5: Solve for x
    x = 64,070,942.34/12,253.95
  6. Step 6: Final answer
    x = 5,228.60

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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.