Home / 12,257.28-16,915.12-6,668.32

Finding the Fourth Proportional to 12,257.28, 16,915.12 and 6,668.32

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Solution

The fourth proportional to 12,257.28, 16,915.12 and 6,668.32 is: 9,202.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,257.28 : 16,915.12 = 6,668.32 : x
  2. Step 2: Convert to fraction form
    12,257.28/16,915.12 = 6,668.32/x
  3. Step 3: Cross multiply
    12,257.28x = 16,915.12 × 6,668.32
  4. Step 4: Simplify right side
    12,257.28x = 112,795,433.00
  5. Step 5: Solve for x
    x = 112,795,433.00/12,257.28
  6. Step 6: Final answer
    x = 9,202.32

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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.