Home / 11,278.94-16,915.14-3,381.12

Finding the Fourth Proportional to 11,278.94, 16,915.14 and 3,381.12

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Solution

The fourth proportional to 11,278.94, 16,915.14 and 3,381.12 is: 5,070.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.94 : 16,915.14 = 3,381.12 : x
  2. Step 2: Convert to fraction form
    11,278.94/16,915.14 = 3,381.12/x
  3. Step 3: Cross multiply
    11,278.94x = 16,915.14 × 3,381.12
  4. Step 4: Simplify right side
    11,278.94x = 57,192,118.16
  5. Step 5: Solve for x
    x = 57,192,118.16/11,278.94
  6. Step 6: Final answer
    x = 5,070.70

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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.