Home / 13,890.42-20,839.41-7,314.84

Finding the Fourth Proportional to 13,890.42, 20,839.41 and 7,314.84

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Solution

The fourth proportional to 13,890.42, 20,839.41 and 7,314.84 is: 10,974.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.42 : 20,839.41 = 7,314.84 : x
  2. Step 2: Convert to fraction form
    13,890.42/20,839.41 = 7,314.84/x
  3. Step 3: Cross multiply
    13,890.42x = 20,839.41 × 7,314.84
  4. Step 4: Simplify right side
    13,890.42x = 152,436,949.84
  5. Step 5: Solve for x
    x = 152,436,949.84/13,890.42
  6. Step 6: Final answer
    x = 10,974.25

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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.