Home / 8,170.45-12,239.27-6,915.66

Finding the Fourth Proportional to 8,170.45, 12,239.27 and 6,915.66

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Solution

The fourth proportional to 8,170.45, 12,239.27 and 6,915.66 is: 10,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,170.45 : 12,239.27 = 6,915.66 : x
  2. Step 2: Convert to fraction form
    8,170.45/12,239.27 = 6,915.66/x
  3. Step 3: Cross multiply
    8,170.45x = 12,239.27 × 6,915.66
  4. Step 4: Simplify right side
    8,170.45x = 84,642,625.99
  5. Step 5: Solve for x
    x = 84,642,625.99/8,170.45
  6. Step 6: Final answer
    x = 10,359.60

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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.