Home / 12,278.33-18,417.02-3,958.39

Finding the Fourth Proportional to 12,278.33, 18,417.02 and 3,958.39

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Solution

The fourth proportional to 12,278.33, 18,417.02 and 3,958.39 is: 5,937.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.33 : 18,417.02 = 3,958.39 : x
  2. Step 2: Convert to fraction form
    12,278.33/18,417.02 = 3,958.39/x
  3. Step 3: Cross multiply
    12,278.33x = 18,417.02 × 3,958.39
  4. Step 4: Simplify right side
    12,278.33x = 72,901,747.80
  5. Step 5: Solve for x
    x = 72,901,747.80/12,278.33
  6. Step 6: Final answer
    x = 5,937.43

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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.