Home / 12,087.24-16,680.38-6,782.55

Finding the Fourth Proportional to 12,087.24, 16,680.38 and 6,782.55

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Solution

The fourth proportional to 12,087.24, 16,680.38 and 6,782.55 is: 9,359.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.24 : 16,680.38 = 6,782.55 : x
  2. Step 2: Convert to fraction form
    12,087.24/16,680.38 = 6,782.55/x
  3. Step 3: Cross multiply
    12,087.24x = 16,680.38 × 6,782.55
  4. Step 4: Simplify right side
    12,087.24x = 113,135,477.46
  5. Step 5: Solve for x
    x = 113,135,477.46/12,087.24
  6. Step 6: Final answer
    x = 9,359.91

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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.