Home / 12,936.78-19,378.29-8,233.52

Finding the Fourth Proportional to 12,936.78, 19,378.29 and 8,233.52

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Solution

The fourth proportional to 12,936.78, 19,378.29 and 8,233.52 is: 12,333.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.78 : 19,378.29 = 8,233.52 : x
  2. Step 2: Convert to fraction form
    12,936.78/19,378.29 = 8,233.52/x
  3. Step 3: Cross multiply
    12,936.78x = 19,378.29 × 8,233.52
  4. Step 4: Simplify right side
    12,936.78x = 159,551,425.95
  5. Step 5: Solve for x
    x = 159,551,425.95/12,936.78
  6. Step 6: Final answer
    x = 12,333.16

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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.