Home / 12,836.78-19,255.20-3,602.78

Finding the Fourth Proportional to 12,836.78, 19,255.20 and 3,602.78

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Solution

The fourth proportional to 12,836.78, 19,255.20 and 3,602.78 is: 5,404.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,836.78 : 19,255.20 = 3,602.78 : x
  2. Step 2: Convert to fraction form
    12,836.78/19,255.20 = 3,602.78/x
  3. Step 3: Cross multiply
    12,836.78x = 19,255.20 × 3,602.78
  4. Step 4: Simplify right side
    12,836.78x = 69,372,249.46
  5. Step 5: Solve for x
    x = 69,372,249.46/12,836.78
  6. Step 6: Final answer
    x = 5,404.18

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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.