Home / 12,485.48-17,234.64-7,768.85

Finding the Fourth Proportional to 12,485.48, 17,234.64 and 7,768.85

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Solution

The fourth proportional to 12,485.48, 17,234.64 and 7,768.85 is: 10,723.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.48 : 17,234.64 = 7,768.85 : x
  2. Step 2: Convert to fraction form
    12,485.48/17,234.64 = 7,768.85/x
  3. Step 3: Cross multiply
    12,485.48x = 17,234.64 × 7,768.85
  4. Step 4: Simplify right side
    12,485.48x = 133,893,246.79
  5. Step 5: Solve for x
    x = 133,893,246.79/12,485.48
  6. Step 6: Final answer
    x = 10,723.92

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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.