Home / 12,296.31-18,438.06-4,395.78

Finding the Fourth Proportional to 12,296.31, 18,438.06 and 4,395.78

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Solution

The fourth proportional to 12,296.31, 18,438.06 and 4,395.78 is: 6,591.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,296.31 : 18,438.06 = 4,395.78 : x
  2. Step 2: Convert to fraction form
    12,296.31/18,438.06 = 4,395.78/x
  3. Step 3: Cross multiply
    12,296.31x = 18,438.06 × 4,395.78
  4. Step 4: Simplify right side
    12,296.31x = 81,049,655.39
  5. Step 5: Solve for x
    x = 81,049,655.39/12,296.31
  6. Step 6: Final answer
    x = 6,591.38

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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.