Home / 12,456.07-18,663.33-8,940.80

Finding the Fourth Proportional to 12,456.07, 18,663.33 and 8,940.80

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Solution

The fourth proportional to 12,456.07, 18,663.33 and 8,940.80 is: 13,396.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.07 : 18,663.33 = 8,940.80 : x
  2. Step 2: Convert to fraction form
    12,456.07/18,663.33 = 8,940.80/x
  3. Step 3: Cross multiply
    12,456.07x = 18,663.33 × 8,940.80
  4. Step 4: Simplify right side
    12,456.07x = 166,865,147.52
  5. Step 5: Solve for x
    x = 166,865,147.52/12,456.07
  6. Step 6: Final answer
    x = 13,396.29

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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.