Home / 12,455.55-18,694.26-6,915.15

Finding the Fourth Proportional to 12,455.55, 18,694.26 and 6,915.15

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Solution

The fourth proportional to 12,455.55, 18,694.26 and 6,915.15 is: 10,378.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.55 : 18,694.26 = 6,915.15 : x
  2. Step 2: Convert to fraction form
    12,455.55/18,694.26 = 6,915.15/x
  3. Step 3: Cross multiply
    12,455.55x = 18,694.26 × 6,915.15
  4. Step 4: Simplify right side
    12,455.55x = 129,273,612.04
  5. Step 5: Solve for x
    x = 129,273,612.04/12,455.55
  6. Step 6: Final answer
    x = 10,378.80

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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.