Home / 12,380.42-17,084.88-6,715.12

Finding the Fourth Proportional to 12,380.42, 17,084.88 and 6,715.12

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Solution

The fourth proportional to 12,380.42, 17,084.88 and 6,715.12 is: 9,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.42 : 17,084.88 = 6,715.12 : x
  2. Step 2: Convert to fraction form
    12,380.42/17,084.88 = 6,715.12/x
  3. Step 3: Cross multiply
    12,380.42x = 17,084.88 × 6,715.12
  4. Step 4: Simplify right side
    12,380.42x = 114,726,933.96
  5. Step 5: Solve for x
    x = 114,726,933.96/12,380.42
  6. Step 6: Final answer
    x = 9,266.80

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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.