Home / 11,940.40-16,468.76-7,218.80

Finding the Fourth Proportional to 11,940.40, 16,468.76 and 7,218.80

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Solution

The fourth proportional to 11,940.40, 16,468.76 and 7,218.80 is: 9,956.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,940.40 : 16,468.76 = 7,218.80 : x
  2. Step 2: Convert to fraction form
    11,940.40/16,468.76 = 7,218.80/x
  3. Step 3: Cross multiply
    11,940.40x = 16,468.76 × 7,218.80
  4. Step 4: Simplify right side
    11,940.40x = 118,884,684.69
  5. Step 5: Solve for x
    x = 118,884,684.69/11,940.40
  6. Step 6: Final answer
    x = 9,956.51

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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.