Home / 18,770.70-25,907.94-12,398.43

Finding the Fourth Proportional to 18,770.70, 25,907.94 and 12,398.43

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Solution

The fourth proportional to 18,770.70, 25,907.94 and 12,398.43 is: 17,112.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.70 : 25,907.94 = 12,398.43 : x
  2. Step 2: Convert to fraction form
    18,770.70/25,907.94 = 12,398.43/x
  3. Step 3: Cross multiply
    18,770.70x = 25,907.94 × 12,398.43
  4. Step 4: Simplify right side
    18,770.70x = 321,217,780.53
  5. Step 5: Solve for x
    x = 321,217,780.53/18,770.70
  6. Step 6: Final answer
    x = 17,112.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.